4th Grade Science Test 6

Question 1

sound waves travel fastest through

Answer 1

solids

Question 2

sound travels faster/slower than light

Answer 2

slower

Question 3

sound is a form of

Answer 3

energy

Question 4

sound waves can/cannot travel through empty space

Answer 4

cannot

Question 5

speech is produced by the vibrations of the

Answer 5

vocal chords

Question 6

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

Answer 6

middle

Question 7

the auditory ___ carries the message of sound to the brain

Answer 7

nerve

Question 8

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

Answer 8

high

Question 9

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

Answer 9

lowest

Question 10

name two animals that hear the highest frequency sounds

Answer 10

bats and dolphins

Question 11

materials with soft, uneven surfaces tend to ___ sound waves

Answer 11

absorb

Question 12

“sees” with its ears

Answer 12

bat

Question 13

the only animals that have visible outer ears

Answer 13

mammals

Question 14

the inventor of the phonograph

Answer 14

Thomas Edison

Question 15

the inventor of the telephone

Answer 15

Alexander Graham Bell

Question 16

the man who proved that sound waves travel only through matter

Answer 16

Robert Boyle

Question 17

What is a reflected sound that is heard again?

Answer 17

echo

Question 18

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

Answer 18

cochlea

Question 19

sonar is used for

Answer 19

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

Question 20

two ears are better than one because

Answer 20

they help you tell which direction a sound is coming from

Question 21

the bossy bird that plants oak trees

Answer 21

blue jay

Question 22

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

Answer 22

starling

Question 23

the chubby little bird that chooses unusual places to nest

Answer 23

wren

Question 24

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

Answer 24

hummingbird

Question 25

the cheerful bird that can hang upside down on a branch

Answer 25

chickadee

Question 26

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

Answer 26

woodpecker

Question 27

the bird that walks headfirst down trees

Answer 27

nuthatch

Question 28

the singing bird that mimics other birds

Answer 28

mockingbird

Question 29

clouds are made of

Answer 29

air and water

Question 30

anything that takes up space and has weight

Answer 30

matter

Question 31

the particles which make up molecules

Answer 31

atoms

Question 32

water is made of

Answer 32

hydrogen and oxygen

Question 33

matter can exist in three states

Answer 33

solid, liquid, gas

Question 34

the freezing point of water

Answer 34

32 degrees F

Question 35

the boiling point of water

Answer 35

212 degrees F

Question 36

because air has weight, it exerts

Answer 36

pressure

Question 37

the process by which liquid water becomes water vapor

Answer 37

evaporation

Question 38

the process bye which water vapor turns back to liquid

Answer 38

condensation

Question 39

Be able to identify the parts of the ear.

Answer 39

Go look at your worksheet and study it.

Question 40

Be able to identify these birds by looking at them.

Answer 40

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