Energy Transformation

Which type of energy transformation occurs when a flashlight shines?

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

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

Which of the following best describes the energy transformations that occur when a flashlight that runs on batteries is turned on?

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

Which of these is an example of light energy being transformed into chemical energy?

• A glow stick lights up when broken.
• Water heated by the sun evaporates.
• A plant makes sugar in the sunlight.
• A battery causes a buzzer to vibrate.

Which kind of energy change occurs when a candle is burning?

• Chemical to light.
• Light to electrical.
• Solar to heat.
• Chemical to electrical.

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

What is the energy transformation?

• Electrical to Electromagnetic
• Mechanical to Electrical
• Electrical to Thermal
• Kinetic to Sound

A television works by transforming electrical energy into what other kinds of energy?

• Light, thermal, and sound
• Thermal, chemical, and solar
• Sound, mechanical, and electrical
• Light, chemical, and mechanical