Grade 7 Practice Final PDF

Unit A- Interactions and Ecosystems Name: Use the following information to answer the next question The hermit crab shown below is carrying 2 sea anemones. The sea anemones attack predators of the hermit crab, while the hermit crab's movement increases the a...

Unit A- Interactions and Ecosystems Name: Use the following information to answer the next question The hermit crab shown below is carrying 2 sea anemones. The sea anemones attack predators of the hermit crab, while the hermit crab's movement increases the amount of food that the sea anemone is able to catch. Image source: Florida Centre for Instructional Technology 1. Which of the following symbiotic relationships is demonstrated by the hermit crab and the sea anemone? A. Commensalism B. Parasitism C. Competition D. Mutualism Page 1/9  Use the following information to answer the next question Titles of Two Newspaper Articles 1. Over 400,000 Liters of Raw Sewage is Released into a Local River. 2. BC Parks Foundation Fundraises to Convert Salish Sea Island into a Protected Park. 2. Which of the following rows identifies a consequence of human impact relating to the titles of newspaper article 1 and newspaper article 2? Row Title of Newspaper Article 1 Title of Newspaper Article 2 A. Overpopulation Conservation B. Overpopulation Deforestation C. Pollution Conservation D. Pollution Deforestation Page 2/9  Use the following information to answer the next question Grassland Ecosystem Image source: thinglink.com 3. In the grassland ecosystem shown above, energy enters the ecosystem from i , and two examples of biotic components are ii and iii. Row i ii iii A. the sun grass birds B. the sun water soil C. producers grass soil D. producers water birds Page 3/9  Use the following information to answer the next question An Aquatic Food Web 4. Using the food web shown above, disappearance of bivalves would cause the population of the sea ducks to i and the population of phytoplankton to ii. Row i ii A. decrease increase B. decrease decrease C. increase decrease D. increase increase Page 4/9  Use the following information to answer the next question Carbon Cycle Image source: biologycorner.com 5. Which of the following rows identifies the number representing cellular respiration and the number representing combustion? Row Cellular Respiration Combustion A. 2 4 B. 2 1 C. 3 4 D. 3 1 Page 5/9  Use the following information to answer the next question Snowshoe hare is the primary food source of the lynx. The population cycles of these two species are closely linked, as shown in the graph below. Change in the Hare and Lynx Population in Canada Year Source: E.P. Odum, Fundamentals of Ecology, Philadelphia: W.B. Saunders, 1953 6. Which of the following rows predicts what happened to the lynx population between 1935 and 1940 and identifies a reason for the change in population? Row Change in the Lynx Population Reason for the Change A. decreases more food available B. decreases less food available C. increases more food available D. increases less food is available 7. Which of the following statements identifies a sign of ecological succession? A. Harvesting crops from farmland B. Emergence of native plants after a fire C. Replacing grass with shrubs in a yard D. Planting seedlings after a forest is clearcut Page 6/9  Use the following information to answer the next question Recently, coyote sightings have become more frequent within city limits, as cities expand onto nearby undeveloped land. 8. Which of the following identifies an unintended consequence of city expansion, for coyotes? A. Loss of suitable habitat B. Increased food availability C. More energy sources available D. Increased water quality Use the following information to answer the next two questions An ecological footprint visually represents the amount of material and energy that a country uses, per person. Below is a graph showing the ecological footprint of nine different countries. Ecological Footprint for Nine Countries 9. Which of the following identifies an action that the United States can take, in order to decrease it's ecological footprint? A. Promote the use of fossil fuels. B. Encourage eating animal-based diets. C. Decrease the reliance on single use goods. D. Purchase more goods produced in other countries. Page 7/9  Use the following additional information to answer the next question An ecological footprint is determined by the amount of land needed to support one person. The ecological footprint required to support every person on Earth is 1.7 global hectares per person. 10. Which of the following rows identifies the number of countries that have an ecological footprint small enough to support every person on Earth and a question to investigate that would provide some insight into why the country has a small ecological footprint? Number of Row Question to Investigate Countries What are the reasons for the large material and energy use in those A. 3 countries, per person? What are the reasons for the low material and energy use in those B. 3 countries, per person? What are the reasons for the large material and energy use in those C. 4 countries, per person? What are the reasons for the low material and energy use in those D. 4 countries, per person? Page 8/9  Use the following information to answer the next question Description Representation Example 1 Clumped- individuals are 4 7 Weeds in a yard clustered in groups 2 Uniform- individuals are evenly 8 A pack of wolves 5 spaced moving through the woods 3 Random- individuals are spaced 9 Plants growing in a 6 without a predictable pattern farmer's field Source: Population distribution by Yerpo, CC BY-SA 4.0 Numeric Response 1. Using the numbers above, choose one description of how individuals are distributed in an area, and match it with the representation and an example of that distribution pattern. (There is more than one correct answer.) Number: Description Representation Example Page 9/9 Unit B Practice Exam Name: Use the following information to answer the next question One method of growing plants sustainably is by rotating crops year to year, as shown below. 1. A challenge with using crop rotation to maintain productive plants is A. increased crop yield over time B. fewer nutrients in the soil over time C. reduced profit since crops vary in profitability D. increased herbicide and insecticide use Page 1/10  Use the following information to answer the next question Leaf Sample Dichotomous Key for Trees Located in A.B. Williams Woods 2. Using the dichotomous key above, which of the following types of trees did the leaf sample come from, if no smell was detected? A. Hickory B. Ash C. Maple D. Flowering Dogwood Page 2/10  Use the following information to answer the next question Changes in Global Land Use between 1700 and 1995 Source: Lambin, E. F., Turner, B. L., Geist, H. J., Agbola, S. B., Angelsen, A., Bruce, J. W., Coomes, O. T., Dirzo, R., Fischer, G., Folke, C., George, P. S., Homewood, K., Imbernon, J., Leemans, R., Li, X., Moran, E. F., Mortimore, M., Ramakrishnan, P. S., Richards, J. F., … Xu, J. (2001). The causes of land-use and land-cover change: Moving beyond the myths. Global Environmental Change, 11(4), 261–269. https://doi.org/10.1016/s0959-3780(01)00007-3 3. The trend in global land use between 1700 and 1995 is from i environments to ii environments. A possible reason for this change is because iii. The statements above are completed by the information in row Row i ii iii A. natural managed forests were cleared to plant crops B. natural managed more parks were created C. managed natural forests were cleared to plant crops D. managed natural more parks were created Page 3/10  Use the following information to answer the next question Four Locations in Alberta 4. What of the following rows identifies the location where it is most likely for plants to be conical in shape to shed snow and the location where it is most likely for plants to use wind to disperse seeds? Row Conical Shape to Shed Snow Use Wind to Disperse Seeds A. Location 2 Location 4 B. Location 2 Location 1 C. Location 3 Location 4 D. Location 3 Location 1 Use the following information to answer the next question Page 4/10  Water Transport in the Leaf and Root 5. Water is drawn out of the leaf by the process of i and drawn into the root by the process of ii , as shown above. The statement above is completed by the answers in row Row i ii A. photosynthesis diffusion B. photosynthesis osmosis C. transpiration diffusion D. transpiration osmosis Page 5/10  Use the following information to answer the next question The 5-in-1 apple tree contains five different varieties of apples grown from a single plant. Growers produce each tree individually and can vary the types of apples, based on consumer demand. 6. Which of the following methods of reproduction is used to produce a 5-in-1 apple tree? A. Planting a 5-in-1 apple seed B. Grafting five different cuttings C. Combining five different runners D. Pollinators mixing pollen grains Use the following information to answer the next question Pink, yellow, red and white coloured roses exist in nature. Today, the range of rose colours has expanded to include many other possibilities. 7. Which of the following rows identifies the method that growers use to develop new varieties of roses that display different colours and describes a potential problem with this development? Row Method Problem Selective The seeds of the new variety of rose maintain the traits of their A. breeding parents Selective New varieties may be unable to adapt to changing environmental B. breeding conditions The seeds of the new variety of rose maintain the traits of their C. Germination parents New varieties may be unable to adapt to changing environmental D. Germination conditions Page 6/10  Use the following information to answer the next question Planting a single tree species after clear-cut logging or a wildfire is a common practice throughout the interior of British Columbia, Canada. 8. Planting a single tree species results in the variety of species in the environment i and the susceptibility to a pest infestation ii. The statement above is completed by the information in row Row i ii A. increasing increasing B. increasing decreasing C. decreasing increasing D. decreasing decreasing Page 7/10  Use the following information to answer the next question A student investigates how the amount of fertilizer affects plant growth. The initial height of four plants is measured and then each plant receives a different amount of fertilizer, as shown below. Each plant is given the same amount of daily water and light, After two weeks, the student determines the difference in height for each plant and forms a conclusion. 9. Which of the following rows identifies the manipulated variable, the responding variable and a controlled variable of the experiment described above? Row Manipulated Variable Responding Variable Controlled Variable A. Amount of fertilizer Amount of water Difference in height B. Amount of fertilizer Difference in height Amount of water C. Difference in height Amount of water Amount of fertilizer D. Difference in height Amount of fertilizer Amount of water Page 8/10  Use the following information to answer the next question In the past, farmers plowed their fields by cutting into the soil and turning the top layer of soil over. Over time, this made soil particles smaller, and exposed soil to wind. Now, crop scientists are developing new methods of growing crops that do not involve plowing. 10. Which of the following statements identifies a consequence of using traditional plowing to cut into soil? A. The rate of soil erosion increases because the soil is exposed to wind. B. The soil becomes less compacted over time because of smaller soil particles. C. The amount of nutrients in the soil increases because wind carries natural fertilizers. D. The soil is less waterlogged overtime because water runs freely between smaller soil particles. Page 9/10  Use the following information to answer the next question Corn Plant 11. Match the structure numbered above with the function that structure performs described below. (Each number is used only once.) Number: Contains plant Anchors the Produces food Provides a path for Function: seeds plant for the plant food and water Page 10/10 Grade 7 Unit C Heat and Temperature Name: Multiple Choice Use the following information to answer the next question During an experiment, a student measured the final temperature of a substance. The final temperature is shown below. 1. What is the final temperature shown on the thermometer above? A. 87.0 oC B. 87.5 oC C. 88.0 oC D. 92.5 oC Page 1/9  Use the following information to answer the next question Choices Made When Using Energy 1. Reducing energy use when the cost of energy is high 2. Paying an extra fee to use energy from renewable sources 3. Lowering bus fares to encourage use of public transportation 4. Increasing taxes for companies that use non-renewable energy sources 2. Which of the following rows identifies two personal choices and two societal choices when using energy, from the list above? Row Personal Choices Societal Choices A. 1 and 2 3 and 4 B. 1 and 4 2 and 3 C. 1 and 3 2 and 4 D. 2 and 4 1 and 3 Page 2/9  Use the following information to answer the next two questions Experimental Design A student attaches a paperclip to the end of 5 different metal rods with candle wax. They determine the length of time it takes for the paperclip to fall off, when the metal rod is heated using a burner, which acts as a heat source. Observations Time Required for a Paperclip to Fall off of a Metal Rod Type of Metal Rod Time (minutes) Aluminium 2.55 Brass 3.59 Copper 1.45 Iron 3.30 Steel 5.05 3. Which of the following rows identifies 2 controlled variables, from the experiment above? Row Controlled variable 1 Controlled variable 2 A. Type of rod Temperature of the flame B. Length of each rod Time it takes for the paperclip to fall off C. Temperature of the flame Length of each rod D. Type of rod Time it takes for the paperclip to fall off Page 3/9 4. The metal with the greatest rate of conductivity is i. This is because vibrations between neighboring particles in this metal undergo the ii number of collisions. The statement above is best completed by the answers in row: Row i ii A. copper greatest B. copper fewest C. steel greatest D. steel fewest Use the following information to answer the next question The graph below represents the heating curve for sulfur. The melting point for sulfur is 113 oC and the boiling point for sulfur is 445 oC. Heating Curve for Sulfur 5. Sulfur is experiencing a change of state from a liquid to a gas at A. location 1 B. location 2 C. location 3 D. location 4 Page 4/9  Use the following information to answer the next question A pot of soup was heated on a stove and then a serving of soup was immediately poured into a bowl. 6. The temperature of the bowl of soup is i the pot of soup, and there is ii thermal energy in the bowl of soup, when compared to the pot. The statement above is best completed by the answers in row: Row i ii A. the same as more B. the same as less C. less than less D. less than more Page 5/9  Use the following information to answer the next question A student blows up two balloons, balloon A and balloon B, to approximately the same size, as shown in picture 1. The student then places balloon A in the freezer. After 10 minutes, the student removes balloon A from the freezer and compares the size of balloon A to balloon B; their observations are shown in picture 2. 7. When balloon A was placed in the freezer, the gas particles in balloon A i as the particles in balloon A ii thermal energy. The statement above is best completed by the answers in row: Row i ii A. expanded gained B. expanded lost C. contracted lost D. contracted gained Page 6/9  Use the following information to answer the next question Passive Solar Heating 8. Passive solar heating A. is heated directly by the sun's rays B. relies on a mechanical device to transfer heat energy C. requires use of solar panels D. is designed for buildings with air conditioning systems Page 7/9  Use the following information to answer the next question A bimetallic strip consists of a strip of brass metal and a strip of steel metal joined together. Both metals are straight at room temperature, but will bend in one direction if heated, and bend in the opposite direction if cooled. 9. A bimetallic strip works on the principle that A. as the thermal energy increases, the total kinetic energy decreases B. metals contract when they are heated and expand when they are cooled C. metals do not allow for the easy transfer of heat D. metals expand and contract at different rates 10. Which of the following rows identifies an energy source that can be harmful to fish and an energy source that can be harmful to birds? Row Harmful to fish Harmful to birds A. Hydroelectric Solar B. Hydroelectric Wind C. Biomass Wind D. Biomass Solar Page 8/9 Numeric Response Use the following information to answer the next question Actions that Use Energy in a Home 1. Using the stove instead of the microwave 2. Lowering the set temperature on a water heater 3. Washing clothes in hot water 4. Installing a programmable thermostat 5. Operating a full dishwasher 6. Turning off the lights when leaving a room 11. Listed in any order, the four actions that would decrease the amount of energy used in a home are: , , , and. Page 9/9 Grade 7 Unit D Structures and Forces Name: Multiple Choice Use the following information to answer the next question A person stretches an elastic band between their fingers 1. The internal force that is best represented in the diagram above is. A. tension B. compression C. bending D. shearing Page 1/10  Use the following information to answer the next question 2. An elbow is classified as a i joint and a door hinge is classified as a ii joint. The statement above is best completed by the answers in row: Row i ii A. fixed fixed B. flexible fixed C. fixed flexible D. flexible flexible Page 2/10  Use the following information to answer the next question In nature, analogous structures are structures that share a common function, but that are different in design. An example of analogous structures is illustrated below. 3. A bat's wing is more effective at allowing the bat to maneuver in small spaces than a bird because a bat's wing A. contains thin bones which decreases the bats overall mass. B. is streamlined which maintains speed during flight. C. contains multiple joints which allows for changes in surface area. D. is smooth which minimizes drag and improves aerodynamics. Page 3/10  Use the following information to answer the next question Performing a bicep curl engages 2 sets of muscles, the bicep muscle and the tricep muscle. A person performing a bicep curl is shown below. 4. When performing a bicep curl, the bicep muscle exhibits i and the tricep muscle exhibits ii. The statement above is best completed by the answers in row: Row i ii A. compression tension B. tension tension C. tension compression D. compression compression Page 4/10  Use the following information to answer the next two questions An engineering firm was contracted to build a new foot bridge in Edmonton's River Valley. The following bridge design was submitted for approval. 5. In order to ensure that their bridge design is approved, the engineering firm should minimize which of the following factors? A. Total weight that the bridge can support. B. Number of persons who can cross the bridge at one time. C. Safety of persons using the bridge. D. Cost of building the bridge. 6. The firm would also like to improve the strength of the bridge, prior to submitting for approval. Each of the following changes would strengthen the bridge except A. replacing smooth metal with corrugated metal. B. increasing the number of trusses. C. relying on mass to hold components together. D. laminating adjacent beams. Page 5/10  Use the following information to answer the next two questions Experimental Design The initial height of four foam blocks was measured using the method illustrated in Diagram 1. Each block, which is made of the same type of foam, then had a weight placed on top and deformation was allowed to occur. The height of the foam block after the weight was added was then measured using the method illustrated in Diagram 2. The measurements were recorded in the data table below. Deformation of Foam Blocks after Weights are Added Mass of weight Initial height of Height of the block after Block (g) block (cm) deformation (cm) 1 100 g 5.0 4.75 2 200 g 4.5 4.0 3 300 g 5.5 4.75 4 400 g 4.5 3.5 7. According to the data recorded, as the mass added on top of a foam block increased, the difference between the initial height of the block and the height of block after deformation A. did not exhibit a pattern. B. increased. C. remained the same. D. decreased. Page 6/10 8. Select the row that correctly identifies the manipulated variable, responding variable and a controlled variable of the experiment described above. Manipulated Row Responding variable Controlled variable variable initial height of location on the foam block where A. mass of weight block height is measured initial height of height of the block after location on the foam block where B. block deformation height is measured height of the block after C. mass of weight type of foam used deformation D. mass of weight initial height of block type of foam used Page 7/10  Use the following information to answer the next question A stool is available in two different sizes, as depicted below. 9. Compared to stool 1, stool 2 has a i centre of gravity, resulting in stool 2 being ii stable than stool 1. The statement above is best completed by the answers in row: Row i ii A. lower more B. higher more C. lower less D. higher less Page 8/10  Use the following information to answer the next question An Individual Applies a Force on a Mystery Box 10. In order to make the mystery box slide faster and without tipping over, the individual should i the magnitude of the force applied and apply the force closer to the ii of the mystery box. The statement above is best completed by the answers in row: Row i ii A. increase bottom B. increase top C. decrease top D. decrease bottom Page 9/10 Numeric Response Use the following information to answer the next question Types of Structural Forms 1. Solid 2. Frame 3. Shell 4. Frame and Shell 5. Shell and Solid 6. Solid and Frame 11. Using the list above, classify the structural form of each of the following items Item Goal post Canoe House Rock Record in Record in Record in Record in column 1 column 2 column 3 column 4 Page 10/10 Grade 7 Unit E Planet Earth Name: Multiple Choice 1. Which of the following objects best represents our current understanding of the interior of the Earth? A. A peach B. An apple C. An air balloon D. A chocolate ball Page 1/8  Use the following information to answer the next question The Moh's Hardness Scale is a guide used to identify unknown minerals by comparing the resistance of the unknown mineral to being scratched by another substance of known hardness. Moh's Hardness Scale Hardness Mineral Can be Scratched With 1 talc soft pencil point 2 gypsum fingernail 3 calcite copper wire 4 fluorite iron nail 5 apatite glass 6 feldspar steel file 7 quartz sandpaper 8 topaz sandpaper 9 corundum emery board 10 diamond diamond Experimental Design A student scratched an unknown mineral with three different materials and noted the following observations. They then used the Moh's hardness scale to determine the possible identity of the unknown mineral. Observations The unknown mineral can be scratched with a fingernail can be scratched with glass can be scratched by sandpaper 2. Based on the observations made above, the most likely identity of the unknown mineral is A. gypsum B. quartz C. apatite D. feldspar Page 2/8  Use the following information to answer the next question 3. Compared to 2019, the overall mass of gold produced in 2020 i and the country that experienced the greatest change in mass of gold produced was ii. The statement above is best completed by the answers in row: Row i ii A. decreased China B. decreased Mexico C. increased China D. increased Mexico Page 3/8  Use the following information to answer the next question A chocolate chip cookie is used to compare the difference between rocks and minerals. 4. Using the model of a chocolate chip cookie, the chocolate chips represent i , which would be classified as a ii. The statement above is best completed by the answers in row: Row i ii A. rocks pure substance B. minerals pure substance C. rocks mixture D. minerals mixture Use the following information to answer the next question 5. The collision of which two tectonic plates most likely resulted in the formation of the Himalayas mountain range? A. Indian plate and Eurasian plate B. Arabian plate and Eurasian plate C. Arabian plate and Indian plate D. Eurasian plate and Phlippine plate Page 4/8  Use the following information to answer the next question Image from the Side of a Fold and Fault Mountain 6. In the fold and fault mountain depicted above, the anticline is found at location i. Fold and fault mountains occur because of ii , which softens the rock, allowing the rock to bend without breaking. The statement above is best completed by the answers in row: Row i ii A. A heat and pressure B. B erosion C. B heat and pressure D. A erosion Page 5/8  Use the following information to answer the next question In 1910, German scientist Alfred Wegener hypothesized that Earth once consisted of a supercontinent surrounded by water. Wegener named the supercontinent Pangaea. 7. The hypothesized presence of Pangaea best supports the concept of A. continental drift B. plate tectonics C. mountain formation D. fossils 8. Fossils are formed by all of the following processes except when the organism A. is quickly buried by sediment. B. becomes trapped in tree resin or sap. C. is exposed to decomposers and scavengers. D. remains are slowly replaced by mineral crystals. Page 6/8  Use the following information to answer the next question Pattern of Fossilized Footprints for 2 Organisms Image Source: Teaching About Evolution and the Nature of Science (1998) 9. An inference that can be made regarding the pattern of fossilized footprints illustrated above is A. Organism 2 travels faster than organism 1. B. Organism 1 is heavier than organism 2. C. Organism 1 flew away after interacting with organism 2. D. Organism 2 changed directions after interacting with organism 1. Use the following information to answer the next question Paleontologists use a combination of fossil evidence, knowledge of modern animal anatomy and imagination to develop an idea of what ancient organisms would have could have looked like. 10. When creating a 3-dimensional model of the fossil illustrated above, paleontologists would use their imagination to determine the of the ancient organism. A. location of muscle attachment B. length C. colour D. method of locomotion Page 7/8 Numeric Response Use the following information to answer the next question The Venn diagram below can be used to compare properties of igneous, sedimentary and metamorphic rocks. Numeric Response 1. Match the property listed below with the numbered regions of the Venn diagram depicted above. (A number may be used more than once.) Numbered Property region the diagram Classified as intrusive or extrusive (record in the first column) Requires pressure to be formed (record in second column) Can contain fossils (record in third column) Forms from hot, molten rock (record in fourth column) (Record your four-digit answer in the numerical-response section on the answer sheet.) Page 8/8