Energy Transformations Review

Which energy conversion is taking place when you put gasoline in a car?

• thermal -> electrical
• mechanical -> electrical
• chemical -> mechanical
• mechanical -> electromagnetic

Energy transformations occur when...

• energy is created through conduction
• energy changes from one form to another
• two forces slide together that are touching
• a chemical reaction takes place

According to the Law of Conservation of Energy, energy cannot be _________ or ____________. 

• destroyed, destroyed
• created, saved
• created, destroyed
• lost, found

Mechanical energy

• energy built up before being in motion
• energy released in a chemical reaction
• energy of motion
• sum of kinetic and potential energy

Gravitational potential energy depends on the ________ and ________ of the object. 

• Height and mass
• Friction and movement
• Mass and Movement
• Height and Friction 

The purpose of solar panels is to change solar energy into ____________.

• light energy
• electrical energy
• chemical energy
• mechanical energy

A hairdryer converts -- 

• electrical energy into chemical
• electrical energy into thermal
• chemical energy into mechanical
• thermal energy into mechanical

What kind of energy is in a moving skateboard?

• Potential
• Kinetic

Food has _________ energy. 

• Potential 
• Kinetic 
• None of the above 
• All of the above 

Kinetic energy increases as an object moves _________. 

• slower
• faster
• at the same speed
• through an object