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Energy and Heat Practice Tests

These Grade 7 Science practice tests build understanding of kinetic and potential energy, thermal energy, heat, temperature, conduction, convection, radiation, insulation, energy transformations, and conservation.

Skills covered

  • Distinguishing kinetic, potential, chemical, thermal, electrical, light, and sound energy
  • Explaining the difference between heat, temperature, and total thermal energy
  • Identifying conduction, convection, radiation, and insulation in real situations
  • Tracking energy transfers and transformations in systems
  • Applying conservation of energy to machines, motion, heating, and everyday technology

How to use these practice tests

For each question, identify the system and the energy form involved. Then trace where energy moves or changes and decide whether the evidence describes heat transfer, temperature, or energy conservation.

For more Grade 7 Science practice, return to the Grade 7 Science category.

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5. Test

Grade 7 Energy and Heat Practice Tests

Practice Grade 7 Science energy and heat questions about energy forms, heat, temperature, transfer, insulation, and conservation.

Choose the best answer for each question. Review the explanation after submitting your answers.

10 Questions
0/10 Questions0 %
Correct 0
Incorrect 0
Unanswered 10
1. QuestionMultiple choice

Why does a dark surface often warm more in sunlight than a light surface?

Please select an answer first.

Correct answer: A

The correct answer is It absorbs more radiant energy..

  1. Identify the energy idea: Determine whether the question concerns energy form, energy transfer, heat, temperature, or an energy system.
  2. Connect the evidence: Dark surfaces generally absorb more visible radiation, increasing their thermal energy.
  3. Check conservation: Energy can move or change form, but a complete system accounts for the energy rather than treating it as created or destroyed.

Dark surfaces generally absorb more visible radiation, increasing their thermal energy.

2. QuestionMultiple choice

Why does a thermos help keep a drink hot or cold?

Please select an answer first.

Correct answer: B

The correct answer is Its materials and air gaps slow conduction, convection, and radiation..

  1. Identify the energy idea: Determine whether the question concerns energy form, energy transfer, heat, temperature, or an energy system.
  2. Connect the evidence: A thermos limits several heat-transfer pathways between the drink and its surroundings.
  3. Check conservation: Energy can move or change form, but a complete system accounts for the energy rather than treating it as created or destroyed.

A thermos limits several heat-transfer pathways between the drink and its surroundings.

3. QuestionMultiple choice

A metal spoon and a wooden spoon are left in the same room overnight. What will happen?

Please select an answer first.

Correct answer: C

The correct answer is Both approach the room temperature even though they transfer energy at different rates..

  1. Identify the energy idea: Determine whether the question concerns energy form, energy transfer, heat, temperature, or an energy system.
  2. Connect the evidence: Objects in the same surroundings move toward thermal equilibrium; material affects rate, not the final equilibrium temperature.
  3. Check conservation: Energy can move or change form, but a complete system accounts for the energy rather than treating it as created or destroyed.

Objects in the same surroundings move toward thermal equilibrium; material affects rate, not the final equilibrium temperature.

4. QuestionMultiple choice

Why can a breeze cool skin even when air temperature stays the same?

Please select an answer first.

Correct answer: D

The correct answer is Moving air increases evaporation and carries thermal energy away from the skin..

  1. Identify the energy idea: Determine whether the question concerns energy form, energy transfer, heat, temperature, or an energy system.
  2. Connect the evidence: Air movement can increase evaporation and convection, increasing the rate of heat transfer from skin.
  3. Check conservation: Energy can move or change form, but a complete system accounts for the energy rather than treating it as created or destroyed.

Air movement can increase evaporation and convection, increasing the rate of heat transfer from skin.

5. QuestionMultiple choice

Which investigation best compares the insulating ability of materials?

Please select an answer first.

Correct answer: A

The correct answer is Wrap identical cups with equal thicknesses of different materials and measure temperature change over time..

  1. Identify the energy idea: Determine whether the question concerns energy form, energy transfer, heat, temperature, or an energy system.
  2. Connect the evidence: A fair test controls cup, liquid, thickness, and starting conditions while comparing temperature changes.
  3. Check conservation: Energy can move or change form, but a complete system accounts for the energy rather than treating it as created or destroyed.

A fair test controls cup, liquid, thickness, and starting conditions while comparing temperature changes.

6. QuestionMultiple choice

Why does stirring hot chocolate help cool it?

Please select an answer first.

Correct answer: B

The correct answer is Stirring moves warmer and cooler liquid together, increasing convection and contact with the cup and air..

  1. Identify the energy idea: Determine whether the question concerns energy form, energy transfer, heat, temperature, or an energy system.
  2. Connect the evidence: Mixing distributes thermal energy and can increase transfer to the surroundings.
  3. Check conservation: Energy can move or change form, but a complete system accounts for the energy rather than treating it as created or destroyed.

Mixing distributes thermal energy and can increase transfer to the surroundings.

7. QuestionMultiple choice

A solar oven has a reflective interior and a dark cooking container. Why can this design work?

Please select an answer first.

Correct answer: C

The correct answer is The design directs radiant energy toward the container and helps it absorb that energy..

  1. Identify the energy idea: Determine whether the question concerns energy form, energy transfer, heat, temperature, or an energy system.
  2. Connect the evidence: Reflection can direct sunlight, while a dark container absorbs more radiation and converts it to thermal energy.
  3. Check conservation: Energy can move or change form, but a complete system accounts for the energy rather than treating it as created or destroyed.

Reflection can direct sunlight, while a dark container absorbs more radiation and converts it to thermal energy.

8. QuestionMultiple choice

Why does opening a refrigerator door warm the room slightly?

Please select an answer first.

Correct answer: D

The correct answer is Thermal energy and electrical energy eventually leave the refrigerator system into the room..

  1. Identify the energy idea: Determine whether the question concerns energy form, energy transfer, heat, temperature, or an energy system.
  2. Connect the evidence: A refrigerator transfers heat from inside to outside and releases additional energy from its electrical work.
  3. Check conservation: Energy can move or change form, but a complete system accounts for the energy rather than treating it as created or destroyed.

A refrigerator transfers heat from inside to outside and releases additional energy from its electrical work.

9. QuestionMultiple choice

What happens to the average particle motion when a cup of tea cools?

Please select an answer first.

Correct answer: A

The correct answer is The average kinetic energy of the tea particles decreases..

  1. Identify the energy idea: Determine whether the question concerns energy form, energy transfer, heat, temperature, or an energy system.
  2. Connect the evidence: Cooling means the average particle kinetic energy decreases as thermal energy transfers to the surroundings.
  3. Check conservation: Energy can move or change form, but a complete system accounts for the energy rather than treating it as created or destroyed.

Cooling means the average particle kinetic energy decreases as thermal energy transfers to the surroundings.

10. QuestionMultiple choice

Which statement best summarizes energy and heat in everyday systems?

Please select an answer first.

Correct answer: B

The correct answer is Energy is transferred and transformed, while heat moves because of temperature differences..

  1. Identify the energy idea: Determine whether the question concerns energy form, energy transfer, heat, temperature, or an energy system.
  2. Connect the evidence: This distinction helps explain conduction, convection, radiation, transformations, and conservation.
  3. Check conservation: Energy can move or change form, but a complete system accounts for the energy rather than treating it as created or destroyed.

This distinction helps explain conduction, convection, radiation, transformations, and conservation.

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