4th grade science review Ch.4-6
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| How much of the earth is covered by water | three-fourths
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| inventor of the phonograph | Thomas Edison
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| Why do birds migrate? | they cannot survive the winter in cold climates
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| used to locate icebergs and submarines | sonar
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| sound is produced when..... | an object vibrates
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| the two gases that make up water | hydrogen and oxygen
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| water in the gaseous state | water vapor
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| inventor of the telephone | Alexander Graham Bell
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| animal that hears the highest frequencies | bats
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| sound waves travel the fastest through which state of matter | solid
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| Does sound travel faster or slower than light? | slower
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| part of the ear that contains the hammer, anvil, and stirrup | middle ear
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| snail-shaped part of the ear that contains the organ of hearing | cochlea
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| reflected sound that is heard again | echo
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| What are clouds made of? | water and air
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| anything that takes up space and has weight | matter
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| process where water vapor turns back to a liquid | condensation
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| boiling point of water | 212 degrees F
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| three states of matter | solid, liquid, gas
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| air has weight so it exerts..... | pressure
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| freezing point of water | 32 degrees F
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| tiny particles that make up molecules | atoms
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| process where water turns from a liquid to a gas (water vapor) | evaporation
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| carries the message of sound to the brain | auditory nerve
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| the lowest frequency that a human can hear | 20 times per second
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| vibrations of the vocal cords produce.... | speech
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| Is sound a form of energy? | yes
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| Can sound waves travel through empty space? | no
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| when an object vibrates very rapidly the sounds produced have a .... | high pitch
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| Do bats see with their ears? | yes
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| bossy bird that plants oak trees | blue jay
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| singing bird that mimics | mockingbird
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| bird with an extra-long tongue to eat insects | woodpecker
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| chubby bird that nests in unusual places | wren
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| bird that walks headfirst down trees | nuthatch
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| tiny bird that can fly backward | hummingbird
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| bird that hangs upside down | chickadee
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| spangled bird found in every part of the U.S. and Canada | starling
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| Why does a low-frequency sound have a low pitch? | the object vibrates slowly
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| Why are feathers important for birds? | to keep warm; to fly
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
vwalker5
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