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4th Science Matter
Chapters 5-6 Matter and Energy
| Question | Answer |
|---|---|
| smallest piece of a substance that still has the qualities of that substance | molecule |
| anything that takes up space and has weight | matter |
| to move back and forth | vibrate |
| hot water vapor | steam |
| the two atoms which make up water | hydrogen and oxeygen |
| has no shape of its won but fills up a certain amount of space | liquid |
| has a definite shape and fills up a certain amount of space | solid |
| has no shape and does not fill up a fixed amount of space | gas |
| molecules are closest together | solid |
| molecules move the fastest | gas |
| to get smaller | contract |
| a push or pull | force |
| the ability to do work | energy |
| the force which draws things toward the center of the earth | gravity |
| energy that is stored | potential energy |
| molecules _____ _______ when they are heated | speed up |
| The melting point of water is ____. | 32 degrees |
| Water begins to _______ just before is freezes | expand |
| ________ is done when an object is moved | work |
| In order to lift things you mist exert ______ force than gravity does on that object | more |
| Most liquids _______ as they get colder | contract |
| although solids exert pressure, liquids and gasses do not? | false |
| Air is not matter | fasle |
| You do not feel air pressing down on you because pressure on all sides of you is equal | true |
| Warm air rises | true |
| The sun heats the air more than it heats the land | false |
| Wind helps to even out the earth's temperature | true |
| sure at the top of a high mountain is equal to air pressure at sea level | false |
| Every place on Earth receives the same amount of heat or cold because the Earth rotates | false |
| clear enough to see through | transparent |
| the gas that plants take from the air in order to make food | carbon dioxide |
| the layer of air that surrounds the Earth (did you notice that in the book they din't capitalize Earth?) | atmosphere |
| the gas most of the air is made out of | nitrogen |
| the state of matter air exists in naturally | gas |
| the gas people need to breathe and create energy | oxygen |
| water vapor in the air | humidity |
| the process of water becoming a vapor | evaporation |
| any form of water that falls from the clouds | precipitation |
| the process of water vapor becoming a liquid | condensation |
| water changing from a liquid to a solid or gas and to a liquid to a solid or gas over and over again | water cycle |
| the point at which water condenses | dew point |
| water vapor that condenses on cool objects on the ground | dew |
| water vapor that condenses in a cloud and falls | rain |
| frozen water vapor on the ground | frost |
| water vapor that freezes in a cloud | snow (I want some snow so bad! we even have sleds:[) |
| rain or melted snow that falls trough a layer of freezing air | sleet |
| what fraction of water covers the Earth? | 3/4 |
| ______ is anything that takes up space and has weight | matter |
| _______ are the smallest pieces of a substance that still has the qualities of a substance | molecules |
| water is made of hydrogen and ______ | oxygen |
| Molecules in ______ are packed the closest together | solids |
| molecules in ______ are the fastest (vrooom, vroooom!) | gases |
| A ______ has no shape of its won and does not fill up a fixed amount of space | gas |
| Because water has a high _______ ________ objects will float on it | surface tension |
| water changes to ice at the temperature ______ | 32 |
| ______ causes molecules to move faster | Heat |
| what is the ability to do work | energy |
| What is a push or pull on an object | force |
| What is the force which draws things toward the center of the Earth | gravity |
| What supplies the energy in steam | heat |
| What gas makes up most air | nitrogen |
| How far does the atmosphere extend? | 1,000 miles |
| What does the weight of the atmosphere create | air pressure |
| What is the process by which liquid water becomes water vapor | evaporation |
| What is the process of changing water vapor back into liquid water called | condensation |
| a rain or storm cloud | nimbus |
| any form of water that falls from clouds to earth | precipitation |
| the amount of water vapor in the air | humidity |
| frozen water vapor formed in clouds | snow! |
| the temperature at which water condenses | dew point |
| a large body of air that has the same temperature and humidity | air mass |
| the temperature at which water boils | 212'F |
| Frozen rain drops that have been blown back into the cloud to form more frozen layers and back down and repeats over and over again tel it gets to heavy | hail |
| a cloud on the ground | fog |
| to move rapidly back and forth | vibrate |
| a boxlike chamber in the air passage in you throat | larynx |
| the speed of sound | 1,100 feet per second |
| two stretchy bands of tissue inside the larynx | vocal cords |
| Sound waves travel best trough air | solids |
| Sound waves cannot travel at all trough empty space | true |
| As sound waves travel away from their source of the sound, they become weaker. | true |
| Sound waves travel trough all tree states of matter | true |
| Sound is produced when an object vibrates | true |
| The tighter your vocal cords are pulled, the lower your voice will be | false |
| _______ refers to the highness or lowness of a sound | pitch (play ball!) |
| A reflected sound that is heard again is called and ______ | echo |
| Ultrasonic sound waves are to _______ for humans to hear | high |
| An ultrasonic device used by battle ships and regular ships is called ______ | sonar |
| solids | |
| sound travels ______ than light | slower |
| Sound is a form of _______ | energy |
| Sound waves _______ travel through empty space | cannot |
| speech is produced by the vibrations of the _____. | vocal cords |
| The ______ ear includes the hammer, anvil, and stirrup | middle |
| the auditory _______ carries the message of sound to the brain | nerve |
| When an object vibrates very rapidly , the sounds produced have a ______ pitch | higher |
| the _______ frequency that the human ear can hear is 20 vibrates a second | lowest |
| _____ and dolphins hear the highest frequency sounds | bats |
| materials with soft, uneven surfaces tend to _____ sounds. | absourb |
| the ___ "sees" with its ears | bats |
| the inventor of the phonograph | Thomas Edison |
| ________ are the only animals that have visible ears | Mammals |
| the inventor of the telephone | Alexander Graham Bell |
| the man who proved that sound waves travel only through matter | Robert Boyle |
| What is a reflected sound that is heard again? | echo |
| What is the snail-shaped part of the ear that contains the actual organ of hearing | cochlea |
| Sonar is used for... | determining the depth of the water and locating objects in the sea |
| Two ears are better than one because | they help you tell which direction a sound is coming from. |
Created by:
nelsonclan
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