Science Reviewer PDF

SCIENCE REVIEWER Which of these groups of materials are used for our body? A. hairpins, shampoo, metal, and cotton B. floor wax, baby powder and shampoo C. baby powder, cologne, lotion, and soap D. muriatic acid, hair conditioner, cologne, and body scrub Which of these groups of materials is used fo...

SCIENCE REVIEWER Which of these groups of materials are used for our body? A. hairpins, shampoo, metal, and cotton B. floor wax, baby powder and shampoo C. baby powder, cologne, lotion, and soap D. muriatic acid, hair conditioner, cologne, and body scrub Which of these groups of materials is used for cleaning our house? A. comb, silver, soap, and sponge B. rug, wood, floor wax, and shampoo C. metal, gloves, muriatic acids, and hair spray D. detergent, chlorine bleach, gloves, and mop Preservatives and additives are usually added to processed food. Which is NOT included? A. sodium B. monosodium C. indelible ink D. food coloring The following are useful materials. Which does NOT belong to the group? A. book B. glass C. paper D. notebook Some useful materials may also bring hazard when not in used properly. Which material is proper to use in cleaning a bathroom? A. White lead B. Insecticide C. Shampoo D. fabric conditioner How will you know if household material is harmful? A. The material contains much lead content. B. The material is marked poisonous. C. Both A and B D. Neither A nor B Why are metals useful? A. Because it can be broken easily. B. Because it can be thrown away easily. C. Because it can produce good sounds. D. Because it is hard and can be made into different shapes. When do we consider a material to be useful? A. If it doesn't serve its uses. B. If it can serve its purpose. C. If it was in a place seen by people. D. If it was put in a corner and wait for disposal Study the pictures below that show different activities. Which of them will have harmful effects of materials? Answer: C This means making less garbage. For example, instead of buying juice boxes lunch, buy a large container of juice and use a washable single serving conte take it to school. What kind of conservation is this? A. Reduce B. Reuse C. Recycle D. Rebuild Which statement CORRECTLY defines reproduction? A. The adults make offspring. B. The parents make an offspring. C. The offspring makes an exact copy of an adult. D. The offspring makes the exact opposite of the adult. Why is reproduction important to an organism? A. Because it controls body parts. B. Because it collects and removes waste. C. Because it collects and damage body parts. D. Because it ensures continued presence of the organism. What part of the male reproductive system protects the testis? A. glans B. scrotum C. Vas deferens D. prostate gland What male reproductive organ looks like a pouch that regulates the temperature of the testicles? A. glans B. prostate gland C. scrotum D. Vas deferens What part of the female reproductive system releases the egg cells and hormones like estrogen and progesterone? A. cervix B. Ovary C. uterus D. vagina Which of the following organs open to allow the passage of the baby to the vagina? A. cervix C. uterus B. ovary D. vagina What term marks the stärt of being a teenager? A. adolescence B. adulthood C. infanthood D. senility Paola, a 12-year-old girl faced a mirror one morning and noticed some physical changes on her body. What change could it be? A. enlarged breasts B. appearance of facial hair C. Larger and stronger muscles D. Voice become deeper and lower What change did Raymond notice when he saw the appearance of Adam's apple on his neck? A. social change B. physical change C. emotional change D. intellectual change The following are changes that occur among us during the age of puberty. Which of them take place in both boys and girls? I. Appearance of Adam's apple II. Growth of pubic hair Ill. Appearance of mustache. IV. Occurrence of menstruation V. Occurrence of pimples VI. Development of muscles. VII. Increase in height and weight. A. I, IV, and VII C. II, V, and VII B. Ill and V D. Ill and VI Which type of motion is undergone by an object moving across a straight line? A. Rolling motion B. Circular motion C. Periodic motion D. Rectilinear motion What do you call an object or a place used for comparison to determine if something has moved? A. Position B. Constant C. Velocity D. Reference point Which statement CORRECTLY defines distance? A. It is the rate of change of velocity per unit of time. B. It is the measure of how fast an object is moving. C. It is the speed at which something moves in a particular direction. D. It is the measure of how far or near two points are from one another. How can a biker travel a great distance in a specified time? A. Pedal slowly to decrease the speed of the bike. B. Pedal faster to increase the speed of the bike. C. Increase the distance it will cover at the same time allotment. D. Pedal slowly to increase the time it will take to cover the distance. Speed is the rate of motion and expressed as a measurement of distance moved during a period. Which of the following shows the correct unit of speed? I. meter Il. second Ill. meter per second IV. kilometer per hour A. I only B. II only C. Ill and IV D. land II A car travels at a constant speed of 20 meters per second. How far will the car travel in 10 seconds? A. 200 meters B. 300 meters C. 400 meters D. 500 meters You are racing a cart down the hallway. If you move 10 meters in 5 seconds, what is your speed? A. 2 meters per second B. 5 meters per second C. 50 meters per second D. 2 miles per hour Which of the following is NOT a good conductor of heat and electricity? A. Gold B. Rubber C. Copper D. Aluminum Which of the following materials are good conductors of heat and electricity? A. Tiles, blanket, wood B. Nail, safety pin, thumbtacks C. Glass, pitcher of water, dura box D. Ceramic cups, disposable glass Which of the following sets of materials are good conductors of heat and electricity? A. silver, copper, iron B. clay, paper, wood C. plastic, rubber, glass D. tin, aluminum, cloth Which refers to the process of breaking down of rocks into smaller pieces? A. erosion C. tsunami B. landslide D. weathering 32. Which of the following tends to cause mechanical or chemical weathering? A. water that seeps into the pores and cracks of rocks B. roots of plants growing into cracks in the rocks C. animals that burrow in the ground D. All of the above How do plants serve as agents of weathering? A. Falling of leaves causes rocks to break. B. Decaying trunks of plants causes the rocks to break. C. Roots of plants that grow in rocks and cause them to break. D. Branches of plants cause the rocks to break when blown by the wind Which of the following is the effect of very strong winds of public storm signal #4 on the transportation system? A. It is unsafe to travel both in air and in sea. B. The eye of the typhoon is over the town. C. Travel by sea is allowed but not in the air. D. Travel by air is allowed but not in sea Which can be greatly damaged by typhoons? A. agricultural lands B. fish farms C. forests D. all of the above When a weather disturbance threatens low-lying coastal areas, which of the following should the residents consider as the best strategy to ensure safety? A. Hide under sturdy furniture. B. Go up to the top of their houses. C. Evacuate to a higher safer place. D. Seek shelter in the basement of their houses. The following are negative effects of typhoon EXCEPT: A. It cleans rivers. B. It adds trash from rivers. C. It removes pollutants from the air. D. It fills up dams and replenish water supply. Which picture shows preparing safety measures before typhoon? A. I only B. II only C. I and II only D. I, II. and III Which picture of the moon shows the new moon phase? C. Which refers to a group of stars that had been interpreted as star patterns by ancient culture, usually after a mythological or religious figure, an object, or an animal? A. asteroid B. constellations C. galaxy D. planets.