Energy Transformation Flashcard

Front

In a gasoline-powered car, chemical energy from gasoline is transformed to make the car move. The motion of the car is what form of energy?

Back

mechanical energy

Answer explanation

The motion of the car is a form of mechanical energy, which is the energy associated with the movement of objects. In this case, the car's movement results from the conversion of chemical energy from gasoline.

Front

Both a microwave and a light bulb convert electrical energy into which two types of energy?

Back

thermal & electromagnetic

Answer explanation

Both a microwave and a light bulb convert electrical energy into thermal energy (heat) and electromagnetic energy (light). Thus, the correct answer is thermal & electromagnetic.

Front

Which energy conversion takes place when a toaster is switched on?

Back

electrical to thermal

Answer explanation

When a toaster is switched on, it converts electrical energy into thermal energy to heat the coils and toast the bread. Therefore, the correct energy conversion is electrical to thermal.

Front

On a cold winter day, Delia puts logs into a fireplace and sets them on fire. As the fire burns, chemical energy is transformed into which two forms of energy?

Back

electromagnetic & thermal

Answer explanation

As Delia burns the logs, the chemical energy stored in the wood is transformed into thermal energy (heat) and electromagnetic energy (light). Thus, the correct answer is electromagnetic & thermal.

Front

Energy conversion required to make a cordless drill work.

Back

chemical>electrical>kinetic

Answer explanation

The correct energy conversion for a cordless drill is chemical to electrical to kinetic. The battery (chemical energy) powers the motor (electrical energy), which then spins the drill bit (kinetic energy).

Front

Which type of energy is changed by plants into chemical energy? Options: electromagnetic, nuclear, thermal, gravitational

Back

electromagnetic

Answer explanation

Plants convert electromagnetic energy from sunlight into chemical energy through photosynthesis, making 'electromagnetic' the correct choice.

Front

Flow of energy as an apple falls and hits the ground.

Back

potential > kinetic > sound

Answer explanation

As the apple falls, it starts with potential energy at the top of the tree. As it falls, this energy converts to kinetic energy. Upon hitting the ground, some energy is transformed into sound energy, making the correct flow: potential > kinetic > sound.

Front

The sound made by playing a violin is the result of which energy transformation?

Back

mechanical to sound

Answer explanation

The sound produced by a violin comes from the mechanical energy of the bow moving across the strings, which transforms into sound energy. Therefore, the correct answer is mechanical to sound.

Front

Miguel is knocking on the classroom door. Which form of energy is NOT released?

Back

electrical

Answer explanation

When Miguel knocks on the door, he releases kinetic energy (from his movement), sound energy (from the noise of the knock), but not electrical energy, as no electrical processes are involved in this action.

Front

What type of energy does a toy have when placed at the top of the stairs?

Back

potential

Answer explanation

The toy has potential energy when placed at the top of the stairs due to its height. This energy can be converted to kinetic energy as it rolls down the steps.