4th Grade Science Test 6 Flashcards

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1
Q

sound waves travel fastest through

A

solids

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2
Q

sound travels faster/slower than light

A

slower

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3
Q

sound is a form of

A

energy

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4
Q

sound waves can/cannot travel through empty space

A

cannot

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5
Q

speech is produced by the vibrations of the

A

vocal chords

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6
Q

the ___ ear includes the hammer, anvil, and stirrup.

A

middle

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7
Q

the auditory ___ carries the message of sound to the brain

A

nerve

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8
Q

when an object vibrates very rapidly, the sounds produced have a ___ pitch

A

high

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9
Q

the ___ frequency that the human ear can hear is 20 times per second

A

lowest

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10
Q

name two animals that hear the highest frequency sounds

A

bats and dolphins

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11
Q

materials with soft, uneven surfaces tend to ___ sound waves

A

absorb

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12
Q

“sees” with its ears

A

bat

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13
Q

the only animals that have visible outer ears

A

mammals

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14
Q

the inventor of the phonograph

A

Thomas Edison

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15
Q

the inventor of the telephone

A

Alexander Graham Bell

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16
Q

the man who proved that sound waves travel only through matter

A

Robert Boyle

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17
Q

What is a reflected sound that is heard again?

A

echo

18
Q

What is the snail-shaped part of the ear that contains the actual organ of hearing?

A

cochlea

19
Q

sonar is used for

A

determining the depth of the water and locating objects in the sea

20
Q

two ears are better than one because

A

they help you tell which direction a sound is coming from

21
Q

the bossy bird that plants oak trees

A

blue jay

22
Q

the spangled birds brought from Europe that are now in every part of the United States and Canada

A

starling

23
Q

the chubby little bird that chooses unusual places to nest

A

wren

24
Q

the tiny bird whose name reminds you of the sound its furiously vibrating wings make

A

hummingbird

25
Q

the cheerful bird that can hang upside down on a branch

A

chickadee

26
Q

the bird who uses his extra-long tongue to probe holes for insects

A

woodpecker

27
Q

the bird that walks headfirst down trees

A

nuthatch

28
Q

the singing bird that mimics other birds

A

mockingbird

29
Q

clouds are made of

A

air and water

30
Q

anything that takes up space and has weight

A

matter

31
Q

the particles which make up molecules

A

atoms

32
Q

water is made of

A

hydrogen and oxygen

33
Q

matter can exist in three states

A

solid, liquid, gas

34
Q

the freezing point of water

A

32 degrees F

35
Q

the boiling point of water

A

212 degrees F

36
Q

because air has weight, it exerts

A

pressure

37
Q

the process by which liquid water becomes water vapor

A

evaporation

38
Q

the process bye which water vapor turns back to liquid

A

condensation

39
Q

Be able to identify the parts of the ear.

A

Go look at your worksheet and study it.

40
Q

Be able to identify these birds by looking at them.

A
Baltimore oriole
blue jay
chickadee
grouse
lark bunting
mockingbird
starling
wren