Energy Transformation

Which type of energy transformation occurs when a flashlight shines?

• chemical → thermal → electrical
• chemical → electrical → light
• thermal → chemical → light
• chemical → electrical → chemical

Which of the following energy transformations occur when a lamp that is plugged into a wall socket is functioning correctly?

• Chemical to light
• Electrical to chemical
• Electrical to light
• Chemical to electrical

What energy transformation occurs when a crock pot is plugged into an outlet and then the control knob is turned "on"?

• thermal to electrical

• mechanical to thermal

• electrical to thermal

• electrical to sound

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

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

What sort of energy transformation is this?

• Chemical to Thermal

• Thermal to chemical

• Kinetic to potential

• Open to closed

The form of energy involved in eating a peanut butter and jelly sandwich can be transformed into riding a bike. What types of energy occur in this transformation?

• Nuclear - biomechanical
• Chemical - mechanical
• Potential - kinetic
• Electromagnetic - thermal

A lamp that plugs into a wall socket draws energy which flows through a thin wire in the bulb causing it to glow. What energy transformations are taking place?

• chemical → light → electrical
• mechanical → sound → light
• thermal → solar → electrical
• electrical → thermal → light

When water falls through a dam and turns a turbine connected to a generator, electricity is produced. This electricity is often used to light our homes and offices. Which of the following shows the energy transformations that occurs?

• electrical → light → mechanical
• chemical → mechanical → electrical
• mechanical → chemical → light
• mechanical → electrical → light

Which of the following shows the correct order of the energy transformations that occur when green plants produce their food from the Sun’s energy?

• chemical → thermal
• light → chemical
• thermal → light
• chemical → electrical

The picture shows a light bulb attached to a hand generator. What energy transformation occurs as the handle of the generator is turned?

• thermal → solar → light
• solar → light → electrical
• mechanical → electrical → light
• electrical → mechanical → light