Science Quiz 23

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1. Match the Organs to the Letter Represented on the Diagram.

What organ is labelled B?

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2. Match the Organs to the Letter Represented on the Diagram.

What organ is labelled C?

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3. Match the Organs to the Letter Represented on the Diagram.

What organ is labelled D?

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4. Match the Organs to the Letter Represented on the Diagram.

What organ is labelled E?

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5. Match the Organs to the Letter Represented on the Diagram.

What organ is labelled F?

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6. All the following are true EXCEPT:

Light from the Sun can reach us on Earth, because it .

A. travels very fast

B. travels faster than sound

C. does not need a medium through which to travel

D. has only a short distance to travel

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7. You can see your image in a flat mirror because the surface of the mirror

A. bends light rays

B. reflects light rays in an orderly way

C. absorbs light rays

D. scatters light rays in an uneven way

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8. Which of the following illustrations shows the type of lens found in the eye?

A. A

B. B

C. C

D. D

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9. When light bounces off the surface of an object, we say it is

A. absorbed

B. reversed

C. refracted

D. reflected

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10. If the Sun were at position X, the shadow of the tree would .

A. remain exactly where it is

B. Be formed at position V

C. Appears much larger than the one shown

D. Be formed at position U

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11. The light formation of the tree shadow at W shows all the following properties of light, EXCEPT

A. Light rays are refracted when they pass through trees

B. Light rays travel in straight lines

C. Light rays cannot pass through opaque objects

D. Light rays are reflected from surfaces, which allows us to see things

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12. A green leaf looks green because it .

A. Absorbs green light

B. Reflects all colors of light

C. Reflects all colors except green

D. Reflects green light

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13. Everyone in the school yard is able to hear the school bell ring because

A. our ears will always detect a sound no matter how far it is coming from

B. sound waves travel away from the ringing bell in all directions

C. there is nothing to block the sound and so it reaches everyone easily

D. everyone knows the time that the school bell is going to ring

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14. The pitch of a sound

A. is the same thing as its quality

B. tells how high or low the sound is

C. tells us its intensity

D. is the same thing as its frequency

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15. In which of these library rooms would there be the least echoing?

A. A room with padded chairs, wooden tables, curtains and a carpeted

B. A room with metal chairs and tables, curtains and a straw

C. A room with padded chairs, no curtains or drapes and a concrete

D. A room with metal tables and chairs, and a concrete

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16. Which statement would make the sentence correct? Noise pollution .

A. results from loud sounds that are continued over long periods of time

B. is greatest during the recess period

C. results from sounds of jet aircraft, horns honking and dogs barking

D. is measured in decibels

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17. The object which vibrates to produce sound waves is known as .

A. The frequency of the sound

B. The source of the sound

C. The intensity of the sound

D. The receiver of the sound

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18. Sound waves are really .

A. rings of vibration moving away from a vibrating object

B. particles of matter bumping into each other

C. pure energy moving in one direction only

D. electrical impulses moving away from a source

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19. Sound waves will travel fastest through solids, because

A. solids are heavier than liquids and gases

B. solids can vibrate much faster than liquids and gases

C. the particles in solids are heavier than those in liquids and gases

D. the particles in solids are closer together than those in liquids and gases

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20. Sound will NOT travel across a vacuum, because

A. a vacuum is a very wide area and sound waves cannot make it across

B. there are no particles in a vacuum to carry sound waves

C. sound energy is too strong to travel in a vacuum

D. sound waves are reflected when they hit a vacuum

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21. Use the Figure below to answer item. The bottles are all the same size, but the volume of water varies as shown.

If the boy blows quietly across the rim of each bottle, .

A. Bottles 1 and 4 would give the same sound

B. Bottle 4 would give the highest sound

C. Bottles 2 and 4 would sound alike

D. Bottle 1 would give the highest sound

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22. Use the Figure below to answer item. The bottles are all the same size, but the volume of water varies as shown.

The sound is made because

A. the boy is whistling

B. water fills the bottles

C. the air in the bottle is vibrating

D. each bottle is made of glass and not plastic

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23. Which one of the following functions is NOT carried out by skeletal muscle?

A. Forms red blood cells which then pass into the bloodstream

B. Helps to give the body its overall shape

C. Protects important organs like the brain and heart

D. Serves as a storehouse for protein

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24. Identify the INCORRECT statement among the following:

A. Muscles use energy to contract

B. Tendons attach muscles to bones

C. Muscles shorten and bulge when they contract

D. All muscles cause locomotory movements

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25. Which one of the following statements is correct?

A. A joint is the place where two or more bones move

B. A joint always allows bones to meet

C. A joint allows all bones to move in a circle

D. A joint allows the lower bone to move back and forth

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