1. The place on a tree branch where a leaf has fallen from is
called a/an
A. cork layer. C. edge.
B. stalk. D. leaf scar.

2. Most food nutrients are absorbed into the blood from the
A. large intestine. C. small intestine.
B. alimentary canal. D. stomach.

3. Which one of the following is an example of a parasitic animal?
A. Tapeworm C. Termite
B. Grasshopper D. Ant
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4. One kind of tree that keeps its leaves all winter is the
A. apple. C. maple.
B. elm. D. spruce.

5. A substance needed for the proper functioning of the thyroid gland is
A. chlorine. C. iron.
B. iodine. D. phosphorus.

6. Oxygen is carried in the blood mainly by
A. platelets. C. red corpuscles.
B. plasma. D. white blood cells.

7. Of the following drugs, the one that's most addicting is
A. cocaine. C. marijuana.
B. alcohol. D. heroin.

8. Cheese is a good source of
A. water. C. starch.
B. sugar. D. protein.

9. Which of the following terms describes germ diseases that are spread from person
to person?
A. Bacillus C. Coccus
B. Contagious D. Spirillum

10. The source of carbon dioxide for photosynthesis is
A. chlorophyll. C. sunlight.
B. water. D. air.

11. In a flower, pollen is produced in the
A. corolla. C. receptacle.
B. ovary. D. stamen.

12. A stimulant is a drug that
A. causes hallucinations.
B. renders a small area of the body insensitive to pain.
C. has no effect on the body's nervous system.
D. seems to speed up body functions.
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13. The most important function of the leaf on a plant is
A. storing food that's not immediately needed.
B. manufacturing food for the plant.
C. protecting the plant.
D. taking in moisture.

14. Planting rows of corn alternately with rows of clover is an example of
A. strip cropping. C. planting cover crops.
B. terracing. D. planting windbreaks.

15. Surface water is important because it
A. furnishes plants with water.
B. provides a supply of drinking water.
C. contributes to the water cycle.
D. supplies water to rivers during dry periods.

16. The part of the central nervous system that helps coordinate the movements of muscles
under our control is the
A. cerebellum. C. medulla.
B. cerebrum. D. spinal cord.

17. Chlorophyll is produced by
A. mushrooms. C. animals.
B. green plants. D. soil.

18. Which one of the following nutrients begins to digest in the mouth?
A. Starch C. Fat
B. Protein D. Vitamins

19. An important function of the heart is
A. changing oxygen into carbon dioxide.
B. manufacturing red blood corpuscles.
C. forcing air into the lungs.
D. pumping blood through the body.

20. The two systems that work together to control all body activities are the nervous system
and the
A. circulatory system. C. system of ductless glands.
B. respiratory system. D. skeletal system.

1. The type of filing that's most often used to demonstrate the
lines of magnetic force around a magnet is
A. copper. C. iron.
B. lead. D. aluminum.

2. When a concrete road is put down, black asphalt strips are
placed between sections of the concrete to
A. aid in night driving.
B. allow for the expansion and contraction of the concrete.
C. allow water to drain off the road.
D. prevent vehicles from skidding in icy weather.
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3. Which of the following would not be classified as a fossil fuel?
A. Coal C. Oil
B. Sand D. Natural Gas

4. A mixture of all the colors of the spectrum would produce what color light?
A. Black C. Red
B. Blue D. White

5. An electric motor turns because the electricity passing through its coils produces
A. magnetism.
B. heat.
C. a chemical change in the coils.
D. sound.

6. Distillation produces water that's
A. less pure than filtered water.
B. less pure than aerated water.
C. clear, but contains a high bacteria content.
D. chemically pure.

7. Water is an example of a/an
A. compound. C. element.
B. mixture. D. solution.

8. A compass is actually a
A. piece of metal with a static charge.
B. piece of unmagnetized steel.
C. small magnet on a pivot.
D. stationary magnet.

9. The formula for water is
A. H2O C. H2O
B. HO2 D. 2HO

10. One substance sometimes used as an electrical insulator is
A. aluminum. C. mica.
B. copper. D. steel.

11. Oppositely charged particles form
A. ions. C. atoms.
B. molecules. D. bonds.
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12. Knowing the half-lives of radioactive materials is helpful in
A. changing atomic energy to heat energy.
B. estimating the age of the earth.
C. detecting and measuring radiation.
D. creating fusion bombs.

13. Rapid oxidation gives off
A. much heat and much light. C. little heat and much light.
B. little heat and no light. D. no heat and no light.

14. The chief reason for chlorinating water is to
A. destroy harmful bacteria. C. soften the water.
B. remove unpleasant tastes. D. protect the teeth.

15. Cutting a bar magnet in two pieces produces
A. two magnets. C. a magnetic compass.
B. two unmagnetized bars. D. an electrical current.

16. In the human eye, images are formed on the
A. pupil. C. retina.
B. lens. D. iris.

17. The simplest type of matter is a/an
A. atom. C. compound.
B. element. D. molecule.

18. Heat passes through liquids by the process of
A. absorption. C. convection.
B. conduction. D. radiation.

19. Which one of the following elements is not necessary to start a fire?
A. Combustible material C. Light
B. Heat D. Oxygen

20. When there's an electric current in a wire,
A. the insulation is burned off.
B. a lamp is lighted.
C. the wire becomes brittle.
D. a magnetic field exists around the wire.

1. Ten books are placed on one end of a lever and two books are
placed on the other end. To make the two books and the ten
books balance, the fulcrum must be placed
A. at the center of the lever.
B. between the center and the ten books.
C. between the center and the two books.
D. directly under the ten books.

2. A jet plane operates on the same principle as the
A. eggbeater. C. rotary lawn sprinkler.
B. generator. D. vacuum cleaner.
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3. When air is heated, it
A. contracts. C. condenses.
B. becomes heavier. D. expands.

4. One common use for a pulley is
A. raising a flag to the top of a flagpole.
B. opening a tin can.
C. sharpening a pencil.
D. switching on lights.

5. Concrete can be made by mixing water with sand, crushed stone, and
A. cement. C. shale.
B. clay. D. plaster of paris.

6. In miles, the average distance from the earth to the sun is
A. 8,000. C. 240,000.
B. 186,000. D. 93,000,000.

7. The light-year is used to measure
A. brightness of light. C. time.
B. distance. D. velocity.

8. On a weather map, an area marked “high” indicates high
A. air pressure. C. temperature.
B. relative humidity. D. wind speed.

9. Sandstone is a sedimentary rock, because it's
A. formed by heat. C. made in desert areas.
B. formed underwater. D. made of calcite.

10. Water that's on the side of the earth facing the moon will
A. retreat. C. stay at the same level.
B. rise. D. fall.

11. The natural process by which rocks are crushed and moved is called
A. stratification. C. erosion.
B. evaporation. D. condensation.

12. When swimming underwater, pressure becomes greater
A. as you go deeper. C. when the water is rough.
B. as you near the surface. D. when the water is smooth.

13. The part of the atmosphere closest to the earth is called the
A. stratosphere. C. thermosphere.
B. ionosphere. D. troposphere.

14. The revolving of the earth and the tilt of the earth's axis work together to produce
A. night and day. C. the four seasons.
B. high and low tides. D. solar eclipses.

15. Weather is determined by the movement of
A. clouds. C. the moon.
B. the sun. D. air masses.

16. The imaginary line around the earth, which is used in locating east-west distances, is the
A. equator. C. prime meridian.
B. axis. D. international date line.

17. Vibrating objects usually produce
A. sound waves. C. light waves.
B. heat waves. D. electrical waves.

18. The measurement 1 centimeter is equal to
A. .01 meter. C. 1 meter.
B. .1 meter. D. 10 meters.

19. Wheels help reduce
A. effort. C. work.
B. resistance. D. friction.

20. A vibrating string produces the highest pitch if it's
A. loose and long. C. tight and long.
B. loose and short. D. tight and short.