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NAT REVIEW 2016

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1. 1. SCIENCE
2. 2. When ice melts, what change occur? a. Liquid to gas b. Gas to liquid c. Solid to liquid d. Gas to solid
3. 3. If you pour acid on limestone, it produces carbon dioxide gas. What changes occur? a. Physical Change b. Chemical change c. Both d. Nothing happens
4. 4. Which of the following is NOT a physical change? a. Grating cheese b. Melting Cheese c. Fermenting of cheese d. Mixing two cheeses in a bowl
5. 5. Which transformation of energy takes place when a toaster is switched on? a. Chemical to sound b. Electrical to sound c. Chemical to thermal d. Electrical to thermal
6. 6. When you see bubbles on the bowl of soup which had been left on the table for one night, you may infer that: a. The liquid component of the soup is evaporating b. Physical change is taking place in the soup c. The soup is undergoing chemical change d. Air is dissolved in the soup
7. 7. Deib Lhor kicks a ball on a level sidewalk. It rolls to stop after sometime because____ a. No force is acting on the ball b. Inertia at rest is acting on the ball c. Gravity pulls the ball down d. Friction slows the ball down
8. 8. Max apply grease to the gears of her bicycle to___ a. Reduce friction b. Increase acceleration c. Avoid accident d. Facilitate easy turn in the curve
9. 9. Zarnaih threw a ball over the fence. What energy did the moving ball have? a. Heat energy b. Potential energy c. Light energy d. Kinetic energy
10. 10. Which of the following explains the law of inertia? a. If no force acts on an object that is moving, it will continue moving at the same speed and direction b. An object accelerates because of a force that acts on it. c. For every action, there is an equal and opposite reaction d. A force causes the object to move in circular motion.
11. 11. Chemical spray is harmful to the environment. Why? a. Its affects the clouds b. It pollutes the rivers and oceans c. It destroys the ozone layer d. It destroys our clothes
12. 12. Why can planet Earth support life? a. It has an atmosphere b. It has soil where green plants grow c. It has enough sunlight d. All of the above
13. 13. GLOBAL WARMING is the abnormal rise of Earth’s temperature. What cause of it? a. Greenhouse effect b. Burning houses c. Air pollution d. Garbage dumping
14. 14. A toy robot can walk and talk and runs on batteries. What type of energy is stored in the batteries? a. Chemical b. Electrical c. Nuclear d. Thermal
15. 15. Which transformation of energy takes place when a toaster is switched on? a. Chemical to sound b. Electrical to sound c. Chemical to sound d. Electrical to sound
16. 16. It is the complete trip of the blood from the heart to all parts of the body and back to the heart. a. Digestion b. Circulation c. Respiration d. Secretion
17. 17. What happens to the blood when it reaches the lungs? a. The blood becomes pure and clean b. The blood becomes oxygenated in the lungs c. The blood becomes deoxygenated in the lungs d. The blood flows continuously to the lungs
18. 18. Which of the following controls our body activities? a. Nerves b. Spinal Cord c. Brain d. Backbone
19. 19. Which of the following carries messages to and from the brain? a. Nerves b. Spinal cord c. Vertebrae d. Backbone
20. 20. Why can you hear a sound? a. The nerves that are sensitive to sound carry the message to the brain b. The nerves that are sensitive to light carry message to the brain c. The outer ear collects sounds d. The sounds are loud enough
21. 21.  What is function of the spinal cord? a. Responsible for man’s ability to learn habits and develop skills b. Enables us to think, remember and to be aware of many things around us c. Enables the sensory and motor information to pass between the brain and the parts of the body d. Carry impulses from sense receptors to the central nervous system.
22. 22. What part of the brain is the largest and controls mental processes such as thinking, memorizing, and decision- making? a. Spinal Cord b. Cerebrum c. Cerebellum d. Brain Stem
23. 23. You saw your mother carrying a basket full of grocery items that she brought from the market. You run to help her. What is the usual path of messages received by the body from the environment? a. brain->nerves->spinal cord-> sense organs b. Nerves-> sense organs-> brain-> spinal cord c. Spinal cord->sense organs->brain-> nerves d. Sense organs->nerve->spinal cord-> brain
24. 24. Which organism is an omnivores? a. Snake b. Caterpillar c. Eagle d. Chicken
25. 25. The tail enables the sperm to swim. Why does the sperm need to be able to swim? a. To travel around the testicle b. To prevent drown in the semen c. Because it is a member of the fish family d. In order to get to the egg.
26. 26. Zygote means new individual. That fusion of the male and female gamete to form a zygote is known as___ a. Ejaculation b. Pollination c. Fertilization d. Menstruation
27. 27. To prevent the passing of eggs from the ovary, which part of the organ is tied or cut in an operation called tubal ligation? a. Urethra b. Ovary c. Cervix d. Fallopian tubes
28. 28. What is the function of the kidney? a. It stores urine b. It carries urine out of the body c. It removes wastes from the blood d. It gives signal to the brain to expel the urine from the body
29. 29. What do all vertebrates have in common? a. They live on land b. They all have a hard internal skeleton or backbone c. They all have legs d. They are all warm blooded
30. 30. Which of the following animals are classified as amphibians? a. Frog and salamander b. Lizard and alligator c. Monkey and bear d. Eagle and dove
31. 31. How do clams, oysters, and snails protect themselves from their enemies? a. By making slimy secretions b. By using their hard shells c. By using their spines d. By secreting poison
32. 32. Adaptations are inherited characteristics that help an organism to survive and reproduce in its environment. Looking both ways before crossing a street helps us survive because it is____ a. A survival adaptation b. An inherited survival experience c. Learned through experience d. Inherited from our parents
33. 33. Which one of the following describes an adaptation? a. An insect that acts as a decomposer b. A type of desert animal c. Feature that helps an animal or plant to survive d. A group of bacteria that live in an environment
34. 34. Which is NOT an example of plant adaptation? a. A cactus has a thick cover to hold water in b. A tree loses its leaves in the winter c. A plant has green leaves d. A lily grows bright red flowers to attract pollinatiors
35. 35. The inside of the Earth consists of four major layers. What is the correct order of the layers from the inside of the Earth outwards? a. Inner core, outer core, crust, mantle b. Mantle, inner core, outer core, crust c. Inner core, outer core, mantle, crust d. Outer core, inner core, mantle crust
36. 36. The clean-up crew are decomposers. They get rid of the wastes in an ecosystem. Decomposers differ from scavengers because they_____ a. Do not eat dead organism b. Break down larger organism c. Only eat dead organism d. Only feed on dead plants and animals
37. 37. Organisms vary according to what food they eat and how they eat it. Which of the following combinations is NOT true? a. Python, wild pig, movable jaws b. Moth, plant parts, proboscis c. Frog, insects, rolled tongue d. Bird, insects, beak
38. 38. This is the ability to face things as they are, to be happy and cheerful most of the time, to get along with others and to work in helpful ways. a. Good mental health b. Friendly status c. Positive action d. Negative attitude
39. 39. Some living things depend on each other in a very close relationship, which lasts over time. This relationship is called.. a. Symbiosis b. Parasitism c. Mutualism d. Commensalism
40. 40. Plant -> Grasshopper -> Frog-> Snake->Eagle To what order of consumer does the frog belong in the food chain? a. First-order consumer b. Second-order consumer c. Third-order consumer d. Fourth-order consumer
41. 41. PREPARED BY: Jimnaira Abanto