Term
|
Definition
| ______ of the earth is covered by oceans, lakes, and rivers. |
|
|
Term
|
Definition
| anything that takes up space and has weight |
|
|
Term
|
Definition
| smallest piece of a substance that still has all the qualities of that substance |
|
|
Term
|
Definition
| When two atoms of hydrogen and one atom of oxygen join together, they make a molecule of _____. |
|
|
Term
|
Definition
-"curly"
-thin and featherlike
-high in the sky/made entirely of ice crystals and air
-appear in dry weather
-often mean a storm is coming
-look hazy and delicate |
|
|
Term
|
Definition
-large, puffy clouds
-ween on hot summer days
-flat bottoms and high domed tops like cauliflower
-bright white
-appear during fair weather
-sometimes become thick, heavy, and dark/called "thunderheads" because of heavy rain, thunder, and lightning |
|
|
Term
|
Definition
-thick layers of clouds like a blanket
-flat and often gray
-frequently bing drizzling rain or fine snow
-fairly low
-"FOG"=this type of cloud and it is very close to the earth's surface |
|
|
Term
|
Definition
| Water is a gas, when it is ______. |
|
|
Term
|
Definition
| Hot water vapor is often called _____. |
|
|
Term
|
Definition
-definite shape and take up a certain amount of space
-molecules are packed very close together
-molecules do not vibrate quickly |
|
|
Term
|
Definition
| ____ means to move back and forth. |
|
|
Term
|
Definition
-has no shape of its own, but takes the shape of any container it is put into
-molecules are a little further apart and vibrate a little faster |
|
|
Term
|
Definition
-have no shape
-does not fill up a certain amount of space
-molecules are far apart and are the fastest moving molecules |
|
|
Term
|
Definition
| Beccause water has such a high degree of _______, objects which are heavier than water will float on the surface unless the surface film of the water is broken. |
|
|
Term
|
Definition
| When solids are ____, the molecules begin to move more rapidly. |
|
|
Term
|
Definition
| The temperature at which a solid changes to a liquid is its _____. |
|
|
Term
|
Definition
| The melting point of water is _____. |
|
|
Term
|
Definition
| The temperature at which a liquid changes to a gas is its _____. |
|
|
Term
|
Definition
| The boiling point of water is _____. |
|
|
Term
|
Definition
| Most substances _____ when they are heated. |
|
|
Term
|
Definition
|
|
Term
|
Definition
| Most substances _____ when they become colder. |
|
|
Term
|
Definition
|
|
Term
|
Definition
| _____expands when it gets colder. It does not do what most substance do. It expands at 39 degrees F. |
|
|
Term
|
Definition
| Because water expands when it reaches the freezing point, why is this good? |
|
|
Term
|
Definition
| _____ is the ability to do work. |
|
|
Term
|
Definition
| _____ is done when an object is moved. |
|
|
Term
|
Definition
| _____ is a push or a pull on an object. |
|
|
Term
|
Definition
| _____ is the force which draws things down toward the center of the earth. |
|
|
Term
| exert more force than gravity on that object |
|
Definition
| In order for you to lift something, you must do what? |
|
|
Term
|
Definition
| energy that is found in an object, but that object is not moving/like a rubberband just sitting on the table |
|
|
Term
|
Definition
| stored energy in an object that is moving/ like the rubberband when you pull it back and release it!! |
|
|
Term
|
Definition
| _____ supplies energy to water and the _____ that is formed if full of energy. |
|
|
Term
|
Definition
| _____is a mixture of colorless, odorless, tasteless gases. You cannot see, smell, taste, or pick up a piece of it, but it is there! |
|
|
Term
|
Definition
| The air surrounding the earth is called the _____. |
|
|
Term
|
Definition
| People and animals need _____ to breathe and to create energy. |
|
|
Term
|
Definition
| _____ makes up most of the air. |
|
|
Term
|
Definition
| _____ is needed by plants! |
|
|
Term
|
Definition
| The atmosphere goes up to about _____ above the earth. |
|
|
Term
|
Definition
| _____ holds the atmoshphere in its place and keeps air from floating off into outer space. |
|
|
Term
|
Definition
| Since air has weight and takes up space, air is _____. |
|
|
Term
|
Definition
| Because air has weight, it creates _____. |
|
|
Term
|
Definition
| true or false- Solids and liquids exert pressure? |
|
|
Term
| close to the surface of the earth/decreases |
|
Definition
| The weight of all the air in the atmoshpere ecreates pressure as it presses down. Air pressure is greatest ___________. As you go up higher into the atmosphere, air pressure gradually _____. |
|
|
Term
| because air is exerting upon you the same amount of pressure on all sides |
|
Definition
| Why do we not feel the pressure caused by gravity? |
|
|
Term
|
Definition
| The sun heats the earth and water directly, but it warms the air very little. |
|
|
Term
|
Definition
| The sun warms the air very little because the air is _____. |
|
|
Term
|
Definition
| -you can see through something |
|
|
Term
|
Definition
| Why is the surface of the earth not heated evenly by the sun? |
|
|
Term
|
Definition
| Warm air _____ because it is less dense. |
|
|
Term
|
Definition
|
|
Term
|
Definition
| Because air does _____, winds flow around the earth and help to even out the earth's_____. |
|
|
Term
|
Definition
| water moves from the earth to the air and back again, it changes from a liquid to a solid or a gas. This process is called the _____. |
|
|
Term
|
Definition
| The amount of water vapor,or _____, in the air is changeable. |
|
|
Term
|
Definition
| Warm air is able to hold more water vapor than cool air. True or False? |
|
|
Term
|
Definition
| The process by which liquid water becomes water vapor is called _____. |
|
|
Term
|
Definition
| Because cool air cannot hold as much water vapor as warm air, the water vapor begins to turn back into very tiny droplets of liquid water. This process is called _____. |
|
|
Term
|
Definition
| The temperature at which water condenses is called the ______. |
|
|
Term
|
Definition
| Any form of water which falls from the clouds to the earth is called _____. |
|
|
Term
|
Definition
| Since ____ does not fall from the clouds in the sky, it is not a form of precipitation. |
|
|
Term
|
Definition
| The tiny crystals of ice which are formed by frozen water vapor are known as ______. |
|
|
Term
|
Definition
| When falling rain or melted snow passes through a layer of very cold air, it freezes into little, hard, solid balls of ice called _____. |
|
|
Term
|
Definition
| It sleets only during the winter. |
|
|
Term
|
Definition
| The water droplets evaporate, and the vapor freezes into tiny crystals of ice. As more vapor continues to freeze, the ice crystals join together. This forms _________. |
|
|
Term
|
Definition
| _____begins as raindrops that pass through a very cold layer of air and freeze. Instead of falling to the ground, the ice drops are tossed back up into the cloud by a blast of air. |
|
|
Term
|
Definition
-"rain' or "storm"
-It is term used to describe a cloud from which rain is falling. |
|
|
Term
|
Definition
| -a large body of air which has the same temperature and humidity. |
|
|
Term
|
Definition
| Most air masses in the United States and in southern Canada move from ______. |
|
|
