Energy Probe

Energy...

• is the ability to do work or cause a change
• is all the movement in the universe
• cannot be created or destroyed
• all of the above

Energy can be classified into these two categories.

• Potential and kinetic
• Gravitational and elastic
• Light and sound
• Kinetic and movement

What is kinetic energy?

• Thermal energy
• Nuclear energy
• Energy in motion
• Stored energy

The main parts of a working clothes dryer are shown in the diagram.   This appliance dries clothes primarily by converting —

• electrical energy to heat and mechanical energy 
• mechanical energy to heat and electrical energy 
• electrical energy to heat and light
• mechanical energy to heat and vaporization

What is potential energy?

• Thermal energy
• Nuclear energy
• Energy in motion
• Stored energy

Which is an example of kinetic energy?

• A book sitting on a shelf
• A marble rolling down a ramp
• A parked car
• An elastic band

Which is an example of potential energy?

• A car sitting at the top of a hill
• A kite flying in the air
• A fox chasing a mouse
• A bowling ball rolling

What type of energy is stored inside a battery?

• elastic potential energy
• gravitational potential energy
• chemical potential energy
• kinetic energy

Which type of energy is increased when an object is raised above the ground? 

• Gravitational potential
• Elastic potential
• Kinetic
• Heat

The picture shows a toy car in the process of rolling down a ramp. At point X, the kinetic energy is 50 Joules (J), and the potential energy is 30 J. What is the total energy in the system once the car reaches the bottom of the ramp?

• 20 J, because the energy in the system cannot change form but can be created and destroyed 
• 80 J, because the energy in the system can change form but cannot be created or 
• 30 J, because the potential energy is the only energy at the bottom of the ramp 
• 50 J, because the kinetic energy is the only energy at the bottom of the ramp