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4th grade sci ch 3
Question | Answer |
---|---|
refraction | the bending of light when it passes into a new medium |
energy | the ability to cause motion or create change. |
absorption | occurs when an object takes in light waves. |
kinetic energy | energy of motion |
reflection | occurs when light rays bounce off a surface. |
potential energy | energy that is stored in an object |
gravity | the force of attraction between any two objects |
force | a push or pull that acts on an object. |
conduction | the transfer of heat that occurs when one thing touches another. |
friction | the force that results when two materials rub against each other or when their contact prevents sliding. |
convection | the transfer of thermal energy as matter moves |
magnetism | force that acts on moving electric charges and magnetic materials |
radiation | energy that is sent out in waves |