Test: Challenging Energy Conversions for PSLE

Read the term, write the definition.

What is the most common form of energy 'lost' or 'wasted' during most energy conversions in everyday appliances?

Your Answer

Describe the complete energy conversion that occurs when a car engine burns petrol to move the car, naming all significant forms.

Your Answer

A hydroelectric dam converts the potential energy of water into electrical energy. Name the intermediate energy form involved after the water flows down but before electricity is generated.

Your Answer

When a primary battery powers a torchlight, explain the energy conversion, specifically naming the initial and final desired forms of energy.

Your Answer

Photosynthesis in plants converts light energy into what specific type of potential energy?

Your Answer

An electric fan converts electrical energy primarily into kinetic energy. What other two forms of energy are also produced, indicating some energy loss?

Your Answer

Explain how a solar panel converts energy, specifying only the input and output energy forms.

Your Answer

When a loudspeaker is playing music, what is the main energy conversion happening to produce sound?

Your Answer

A stretched rubber band has potential energy. What specific type of potential energy is this, and what is the primary conversion when it is released to launch a small object?

Your Answer

Q10

A microphone converts sound waves into electrical signals. What energy conversion does this represent?

Your Answer

Q11

In a thermal power plant, coal is burned to produce electricity. Describe the chain of four main energy conversions involved.

Your Answer

Q12

What principle states that energy cannot be created or destroyed, only converted from one form to another?

Your Answer

Q13

When a ball is thrown upwards, it slows down as it rises. Describe the energy conversion occurring during its ascent, ignoring air resistance.

Your Answer

Q14

Name an energy conversion where electrical energy is primarily converted into thermal energy for a useful purpose.

Your Answer

Q15

A wind turbine converts the kinetic energy of wind into electrical energy. What type of energy (potential or kinetic) does the wind possess before hitting the turbine blades?

Your Answer

What is the most common form of energy 'lost' or 'wasted' during most energy conversions in everyday appliances?

Describe the complete energy conversion that occurs when a car engine burns petrol to move the car, naming all significant forms.

A hydroelectric dam converts the potential energy of water into electrical energy. Name the *intermediate* energy form involved after the water flows down but before electricity is generated.

When a primary battery powers a torchlight, explain the energy conversion, specifically naming the *initial* and *final* desired forms of energy.

Photosynthesis in plants converts light energy into what *specific* type of potential energy?

An electric fan converts electrical energy primarily into kinetic energy. What other *two* forms of energy are also produced, indicating some energy loss?

Explain how a solar panel converts energy, specifying only the *input* and *output* energy forms.

When a loudspeaker is playing music, what is the main energy conversion happening to produce sound?

A stretched rubber band has potential energy. What *specific type* of potential energy is this, and what is the primary conversion when it is released to launch a small object?

A microphone converts sound waves into electrical signals. What energy conversion does this represent?

In a thermal power plant, coal is burned to produce electricity. Describe the chain of *four* main energy conversions involved.

What principle states that energy cannot be created or destroyed, only converted from one form to another?

When a ball is thrown upwards, it slows down as it rises. Describe the energy conversion occurring during its ascent, ignoring air resistance.

Name an energy conversion where electrical energy is primarily converted into *thermal* energy for a useful purpose.

A wind turbine converts the kinetic energy of wind into electrical energy. What *type* of energy (potential or kinetic) does the wind possess *before* hitting the turbine blades?

A hydroelectric dam converts the potential energy of water into electrical energy. Name the intermediate energy form involved after the water flows down but before electricity is generated.

When a primary battery powers a torchlight, explain the energy conversion, specifically naming the initial and final desired forms of energy.

Photosynthesis in plants converts light energy into what specific type of potential energy?

An electric fan converts electrical energy primarily into kinetic energy. What other two forms of energy are also produced, indicating some energy loss?

Explain how a solar panel converts energy, specifying only the input and output energy forms.

A stretched rubber band has potential energy. What specific type of potential energy is this, and what is the primary conversion when it is released to launch a small object?

In a thermal power plant, coal is burned to produce electricity. Describe the chain of four main energy conversions involved.

Name an energy conversion where electrical energy is primarily converted into thermal energy for a useful purpose.

A wind turbine converts the kinetic energy of wind into electrical energy. What type of energy (potential or kinetic) does the wind possess before hitting the turbine blades?