Podcast
Questions and Answers
Which of the following correctly defines a producer?
Which of the following correctly defines a producer?
A carnivore is an animal that primarily eats plants.
A carnivore is an animal that primarily eats plants.
False (B)
What is the term for organisms that cannot make their own food?
What is the term for organisms that cannot make their own food?
Heterotrophs
An organism that feeds on dead organic matter is called a __________.
An organism that feeds on dead organic matter is called a __________.
Signup and view all the answers
Which of the following is an example of an abiotic factor?
Which of the following is an example of an abiotic factor?
Signup and view all the answers
Match the following terms with their definitions:
Match the following terms with their definitions:
Signup and view all the answers
Decomposers play a vital role in breaking down organic material.
Decomposers play a vital role in breaking down organic material.
Signup and view all the answers
What is ecology?
What is ecology?
Signup and view all the answers
What is the primary role of photosynthesis in plants?
What is the primary role of photosynthesis in plants?
Signup and view all the answers
Invasive species can enhance food chains by introducing new organisms.
Invasive species can enhance food chains by introducing new organisms.
Signup and view all the answers
Define 'trophic levels'.
Define 'trophic levels'.
Signup and view all the answers
The _____ shows the total amount of mass of living material at each trophic level.
The _____ shows the total amount of mass of living material at each trophic level.
Signup and view all the answers
Match the following biogeochemical processes with their descriptions:
Match the following biogeochemical processes with their descriptions:
Signup and view all the answers
Which of the following factors can disrupt biogeochemical cycles?
Which of the following factors can disrupt biogeochemical cycles?
Signup and view all the answers
The food web is a simplified version of the food chain.
The food web is a simplified version of the food chain.
Signup and view all the answers
Explain the role of herbivores in the food chain.
Explain the role of herbivores in the food chain.
Signup and view all the answers
What is the primary use of an Erlenmeyer flask?
What is the primary use of an Erlenmeyer flask?
Signup and view all the answers
A 0 at the beginning of a number is considered significant.
A 0 at the beginning of a number is considered significant.
Signup and view all the answers
What does WHMIS stand for?
What does WHMIS stand for?
Signup and view all the answers
A ________ is used to pour liquids into another container.
A ________ is used to pour liquids into another container.
Signup and view all the answers
Match the following WHMIS symbols with their meanings:
Match the following WHMIS symbols with their meanings:
Signup and view all the answers
What type of substances may cause irritation to the skin and eyes?
What type of substances may cause irritation to the skin and eyes?
Signup and view all the answers
An Erlenmeyer flask can only be used for measuring liquids.
An Erlenmeyer flask can only be used for measuring liquids.
Signup and view all the answers
A temperature measuring device is known as a ________.
A temperature measuring device is known as a ________.
Signup and view all the answers
What primarily contributes to the buildup of toxins in organisms higher in a food chain?
What primarily contributes to the buildup of toxins in organisms higher in a food chain?
Signup and view all the answers
Density dependent factors have no impact on a population's growth regardless of its size.
Density dependent factors have no impact on a population's growth regardless of its size.
Signup and view all the answers
What is the definition of carrying capacity in an ecosystem?
What is the definition of carrying capacity in an ecosystem?
Signup and view all the answers
The introduction of a new species can lead to increased __________ for food and space with native species.
The introduction of a new species can lead to increased __________ for food and space with native species.
Signup and view all the answers
Match the following human activities with their effects on ecosystems:
Match the following human activities with their effects on ecosystems:
Signup and view all the answers
Which of the following is a consequence of overpopulation in introduced species?
Which of the following is a consequence of overpopulation in introduced species?
Signup and view all the answers
Density independent factors include factors like competition for food.
Density independent factors include factors like competition for food.
Signup and view all the answers
List two actions individuals can take to help protect ecosystems.
List two actions individuals can take to help protect ecosystems.
Signup and view all the answers
Study Notes
Unit 1: Science Skills - General Lab Safety Rules
- General precautions are essential lab safety rules.
- Protective clothing should be worn.
- First aid procedures must be available.
- Using equipment correctly is vital.
- Heating and fire safety procedures need to be followed.
- Handling sharp materials requires careful technique.
- Appropriate chemical handling procedures for working with chemicals are mandatory
- Cleaning up spills and materials is necessary at the end of the experiment
Unit 1: Lab Equipment
- Beaker: Used to measure liquids or chemicals.
- Glass Cylinder: Used to measure liquids or chemicals
- Erlenmeyer Flask: Used to measure liquids or chemicals.
- Bunsen Burner: Used for heating or burning things with a flame.
- Eye Dropper: Used to pick up and drop liquids.
- Granulated Cylinder: Used to measure liquids or chemicals.
- Funnel: Used to pour liquids into something else.
- Scopula: Used to scoop things.
- Thermometer: Used to measure heat.
- Test tube holder: Holds test tubes.
- Digital scale: Weighs items.
- Safety glasses: Protects eyes.
- Test tube brush: Used to clean test tubes.
WHMIS Symbols
- W: Workplace
- H: Hazardous
- M: Materials Handling
- I: Information
- S: System
Hazard Symbols (Oxidizing, Poisonous, Health Hazard)
- Oxidizing hazard: Substances speed up fire, making them more intense. Examples: Chlorine, Bleach
- Poisonous: Substances cause death/toxicity with low exposure. Examples: Bleach, WD-40
- Health hazard: Substances may cause cancer, organ damage or genetic defects after repeated exposure. Examples: Formaldehyde, Radiation
Hazard Symbols (Corrosive, Explosive, Biohazardous)
- Corrosive: Damages metals, eyes, and skin. Examples: Chlorine, NaOH, Bleach
- Explosive: May cause self-reactive explosion harming surrounding areas. Examples: OFF bug spray, Hair spray
- Biohazardous infectious materials: Includes harmful organisms and toxins causing disease in people or animals. Examples: Viruses, Bacteria, Mold
Environmental Hazard Symbols
- Environmental hazards: Substances cause harm to aquatic environment and aquatic life. Examples: Chemical spills, Pesticides
Significant Figures
- Any digit between 1 and 9 is significant.
- Zeroes between non-zero digits are significant.
- Zeros at the end of a number and after a decimal point are significant.
- Zeros used as placeholders are not significant.
Unit 2: Principles of Ecology
- Ecology: The study of how living organisms interact with each other and their environment.
- Producers: Living organisms that make their food using sunlight, water, and carbon dioxide (e.g., plants, algae).
- Primary Consumers: Organisms that eat producers (e.g., herbivores).
- Secondary Consumers: Organisms that eat primary consumers (e.g., carnivores).
- Tertiary Consumers: Organisms that eat secondary consumers (e.g., top carnivores).
- Decomposers: Organisms that break down decaying matter (e.g., bacteria, fungi).
- Heterotrophs: Organisms that cannot produce their own food.
- Autotrophs: Organisms that produce their own food.
- Herbivores: Animals that eat plants.
- Omnivores: Animals that eat both plants and animals.
- Carnivores: Animals that eat other animals.
- Detritivores: Organisms that feed on dead organisms.
- Scavengers: Feed off dead animals.
- Biotic: Living components of an ecosystem (plants, animals, bacteria).
- Abiotic: Non-living components of an ecosystem (water, sunlight, soil).
- Habitat: The environment a particular species lives in.
- Invasive species: Non-native organisms that negatively impact an ecosystem.
- Photosynthesis: The process by which plants use sunlight to produce food.
- Pyramid of Energy: A graphical representation of the flow of energy in an ecosystem, declining energy at each trophic level.
- Pyramid of Biomass: A graphical representation of the total mass of living organisms at each trophic level, declining from producers through apex predators.
Unit 3: Chemistry in Action
- Element: A substance containing only one kind of atom. (e.g., Na, H2)
- Compound: A substance made up of two or more different elements. (e.g., H20, NO3)
- Bohr diagrams: Show the structure of an atom; electrons in orbitals around the nucleus.
- Lewis dot diagrams: Show valence electrons of an element.
- Physical change: Alteration of physical properties, appearance, or state, without changing chemical composition.
- Chemical change: Transformation of substances with formation of new substances/ products. Formation of new substance(s)/product(s)
- Cation: Positively charged ion (metal).
- Anion: Negatively charged ion (non-metal).
- Ionic bond: Formed by transfer of electrons between a metal and non-metal.
- Covalent bond: Formed by sharing electrons between non-metals.
- Polyatomic ion: Ions composed of two or more bonded atoms.
- Chemical equation: Representation of a chemical reaction showing reactants and products.
Unit 4: In Motion
- Displacement: Change in an object’s position.
- Interval of time: Duration between two events.
- Velocity: Speed and direction of motion.
- Acceleration: Change in velocity over time.
- Newton’s First Law of Inertia: An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
- Newton’s Second Law: Acceleration is produced when a force acts on a mass and is equal to the force divided by the mass.
- Newton’s Third Law: For every action, there is an equal and opposite reaction.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Related Documents
Description
This quiz covers the essential lab safety rules and the various lab equipment used in scientific experiments. Understand the importance of protective clothing, first aid, and correct usage of tools to ensure safety in the laboratory. Test your knowledge on the functions and proper handling of fundamental lab equipment.
