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3rd Grade Unit 3 Sum
3rd Grade Unit 3 Summative Review
| Question | Answer |
|---|---|
| The form of energy that powers a hair dryer. | Electrical |
| Potential energy is ____________ energy. | Stored |
| How do a light and a mirror interact? | The mirror reflects the light. |
| What must happen for a shadow to form? | Light must be blocked by an object. |
| What can you feel after you rub an eraser against a paper? | Heat |
| This object changes electrical energy to mechanical energy. | A fan |
| What form of energy does rubbing hands produce? | Thermal |
| Fuel | A form of stored energy. |
| Light travels: | In straight lines in one direction. |
| _______________ gives off both light energy and heat. | An electric light bulb |
| A source of heat, but not a source of light. | Rubbing your hands together. |
| Conduction | Thermal energy flowing from one object to another through direct contact. |