Question

nuclear energy is often transformed to _______________ to make it useful to people.
light
mechanical
electrical
sound
when a child swings on a play set, what energy transformation occurs?
chemical to light
electrical to chemical
chemical to nuclear
chemical to mechanical
when a cars tires spin on the road, friction is generated. in this example, some of the mechanical energy is transformed to _________ energy.
thermal
light
nuclear
solar
energy cannot be created nor _________________.
found
generated
destroyed
wasted

Explanation:

• For the first question: Nuclear power plants convert nuclear energy into electrical energy.
• For the second question: When a child swings, the chemical energy from food (used by muscles) is transformed into mechanical energy (movement of the swing).
• For the third question: Friction between a car's tires and the road converts some mechanical energy into thermal (heat) energy.
• For the fourth question: According to the law of conservation of energy, energy cannot be created or destroyed, only transformed.

Answer:

1. C. Electrical
2. D. chemical to mechanical
3. A. thermal
4. C. destroyed