| Question |
 |
|
| Answer |
|
|
| sun |
largest star, source of all earth's energy, ball of plasma |
| Earth |
only planet that supports life |
| reflection |
waves bending off a surface |
| mass |
amount of matter in an object |
| matter |
anything that has mass and volume |
| volume |
amount of space an object takes up |
| electric current |
movement of electrons that flow |
| kinetic energy |
form of energy associated with motion |
| potential energy |
stored energy |
| velocity |
speed and direction of an object |
| speed |
rate or measure of motion |
| displacement |
how far an object has moved |
| distance |
how far an object has traveled |
| acceleration |
rate at which speed or direction is changing |
| protons |
positive charge |
| nuetrons |
no charge |
| electrons |
negative charge |
| single atom |
smallest part of an atom |
| gases |
spread to fill container, can be compressed |
| liquids |
not easily compressed, takes the shape of the container |
| solids |
keep shape, cannot be compressed |
| minerals |
solid material of earth's crust with a definite composition |
| metamorphic rock |
formed from heat and pressure inside the earth |
| igneous rock |
formed from magma |
| sedimentary rock |
materials cement together by chemicals or pressure |
500 Words
