| A | B |
|---|
| matter | anything that has mass and takes up space |
| mass | the amount of matter in an object |
| a physical property | something you can observe about an object, such as color or shape |
| your 5 senses | sight, hearing, smell, taste, touch |
| a solid | the particles move very slowly, so it has a definite shape |
| a liquid | loosely packed particles that do not form a definite shape |
| a gas | the particles move very quickly and freely-they spread out |
| volume | the amount of space that an object takes up |
| a balance | can be used to measure mass |
| energy | the ability to make things change |
| potential energy | saved energy that isn't being used yet |
| kinetic energy | the energy of motion |
| heat (thermal) energy | heat moves from warmer objects to cooler ones |
| mechanical energy | a kind of kinetic energy |
| electrical energy | from power plants, batteries, and nature |
| climate | the kind of weather a place uusually gets over a long time |
| environment | everything that surrounds a living thing |
| extinct | gone forever |
| fossil | any evidence or remains of an ancient living thing |
| to reproduce | to make more of one's own kind |
| characteristic | something that an object does or one of its parts |
| photosynthesis | a process that turns sunlight, water and carbon dioxide into sugar |
| decomposers | get food by breaking down the dead parts of plants and animals |
| producers | make their own food, such as plants |
| consumers | eat plants and animals that eat plants |
| predators | consumers that eat other animals |
| prey | consumers that predators eat |
| food chain | how food passses from one living thing to another in the environment |
| food web | a set of connected food chains |
| axis | an imaginary line that Earth spins on |
| rotation | the earth's spinning motion |
| a day | one rotation of the earth |
| season | a part of the year with a certain kind of weather |
| hemisphere | the top or bottom half of the earth |
| moon phases | changes in the shape of the moon |
| crescent | a curved shape that is thick in the middle |
| weather | what the air is like around you |
| precipation | water that falls from the sky |
| the water cycle | water moves from the land and sea into the air and back again |
| evaporation | change from a liquid to a gas |
| condensation | coming together of bits of a gas |
| therometer | tool to find out how hot or cold it is |
| anemometer | a tool that shows how fast the wind is blowing |
| air pressure | the weight of air pressing on Earth's surface |
| barometer | a tool that measures air pressure |
| canyon | a deep, narrow valley with steep rocky sides |
| weathering | rock breaking into smaller pieces |
| erosion | moving of rock from one place to another |
| deposition | dropping of rock where the river slows down |
| dune | a large pile of sand built up by the wind |
| glacier | snow that has piled up |
| fault | a long deep crack in the earth's crust |
| earthquake | shaking of the ground |
| volcano | an opening where melted rock comes up from deep underground |
| landslide | a large chunk of earth and rock falling down a hill |
| adaptation | a trait that helps a living thing to survive |
