|Radiation is the transfer of energy through matter or ____.
|A spoon in a glass of water appears broken due to light ____.
|Water vapor (an invisible gas) is also called ____.
|The process of a liquid changing to a gas is ____.
|A cellular phone can receive and transmit ____ waves.
|A seesaw is an example of a ____.
|You can conduct an experiment to test your ____.
|Applying the brakes on a bike produces a force called ____.