Transformations

The diagram shows how a steam engine in a train works. Which description of the energy conversions in the process is correct?

• The chemical energy in the coal is converted to thermal energy, which is then converted to mechanical energy.

• The mechanical energy in the coal is converted to electrical energy, which is then converted to thermal energy.

• The electrical energy in the coal is converted to mechanical energy, which is then converted to thermal energy.

• The thermal energy in the coal is converted to electrical energy, which is then converted to mechanical energy.

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

A lamp is plugged into a wall outlet. Which sentence explains what happens to the electric energy as the light shines?

• The electric energy gets used up.

• The electric energy changes into light and heat energy and is destroyed.

• The electric energy is created again after it produces light and heat energy.

• The electric energy changes into light and heat energy and is not destroyed.

Students built a simple circuit connecting a battery to a light bulb. Which energy transformations happen when the students close the circuit and the bulb lights up?

• Chemical to radiant to electrical

• Electrical to chemical to radiant

• Chemical to electrical to radiant

• Radiant to electrical to chemical

A teacher heats up their lunch in the microwave. What energy transformations occur between the microwave and the food?

• Electrical to light to chemical

• Chemical to thermal to light

• Electrical to electromagnetic to thermal

• Electrical to electromagnetic to chemical

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-5

A battery converts what type of energy to another?

• sound to kinetic

• light to heat

• mechanical to electrical

• chemical to electrical

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

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

Tags

NGSS.MS-PS1-4

The Theory of the Conservation of Energy states -

• Energy can be created, just not destroyed. It changes its form from one type to another.

• Energy can never be created nor destroyed. It can only change its form from one type to another.

• The total energy in our Universe changes, as different forms of energies can be transformed from each other under certain circumstances.

• Energy transformations do not passively occur in our lives, rather we actively make use of energies and transform energies.

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

In an oven, electrical energy is transformed to _________________ energy.

• Thermal

• Solar

• Electrical

• None

Tags

NGSS.MS-PS1-4

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

• Chemical to light.

• Light to electrical.

• Solar to heat.

• Chemical to electrical.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5