Energy Transfer Quiz

What percentage of the energy released by the burning gas is transferred to the water when heating water in a pan using a gas burner?

• 60%

• 20%

• 13%

• 7%

When using a gas burner to heat water in a pan, what percentage of the energy is transferred to the surrounding air?

• 60%

• 20%

• 13%

• 7%

What percentage of the energy from the burning gas is transferred to the pan itself?

• 60%

• 20%

• 13%

• 7%

What percentage of the energy from the burning gas is transferred to the gas burner itself?

• 60%

• 20%

• 13%

• 7%

What happens to the energy that is wasted when using a gas burner to heat water?

• It is stored in the burner for later use.

• It is transferred to the water.

• It dissipates into the surrounding environment.

• It is converted into electrical energy.

What percentage of the energy from the burning gas is wasted?

• 7%

• 13%

• 20%

• 27%

What is the first step in the experiment conducted by the student to investigate the melting rate of a glacier covered in insulating material during summer?

• Place the boiling tube 25 cm from an infrared lamp.

• Record the temperature of the water.

• Measure 30 cm³ of cold water into a boiling tube.

• Switch on the infrared lamp.

What is the purpose of placing the boiling tube 25 cm away from the infrared lamp in the experiment?

• To measure the initial temperature of the water.

• To simulate the sunlight heating the glacier.

• To cool down the water before heating.

• To prevent the water from boiling too quickly.

How often did the student record the temperature of the water during the experiment?

• Every 2 minutes for 10 minutes.

• Every minute for 5 minutes.

• Every 5 minutes for 25 minutes.

• Every 3 minutes for 15 minutes.

What was the final step in the student's experimental procedure to investigate the insulating properties on glacier melting?

• Turn off the infrared lamp.

• Record the final temperature of the water.

• Repeat with boiling tubes covered in different insulating materials.

• Remove the boiling tube from the infrared lamp.