Heat & Energy MCQ | Mind Map & Quiz

Heat and Energy Quiz

1. Which of the following correctly defines heat?

The total kinetic energy of all particles in a substance

The transfer of thermal energy between objects at different temperatures

A measure of how hot or cold an object is

The potential energy stored in molecular bonds

2. What is the exact value of 1 calorie in joules?

4.184 J

4.186 J

4.190 J

4.200 J

3. What is unique about water's expansion between 0°C and 4°C?

It expands when cooled (unlike most substances)

It contracts when heated

Its density remains constant

It changes color as temperature changes

4. Which of these statements about energy flow is correct?

Energy can be completely converted from one form to another without losses

Energy always flows from colder objects to hotter objects

Energy is neither created nor destroyed, only transformed

All energy transfers are 100% efficient

5. Which of these are renewable energy sources? (Select all that apply)

Solar energy

Wind energy

Natural gas

Tidal energy

6. What is the main cause of the greenhouse effect?

The Earth's magnetic field trapping heat

Certain gases in the atmosphere trapping infrared radiation

The ozone layer absorbing all sunlight

Ocean currents distributing heat unevenly

7. What does energy degradation refer to?

The complete loss of energy in a system

Energy becoming less concentrated and useful over time

The breakdown of energy sources like fossil fuels

The reduction in energy prices over time

8. Which of these is NOT a consequence of anomalous expansion of water?

Ice floats on water

Lakes freeze from the bottom up

Water has maximum density at 4°C

Water expands when cooled below 4°C

9. Which law of thermodynamics states that energy cannot be created or destroyed?

Zeroth Law

First Law

Second Law

Third Law

10. Which of these energy sources is non-renewable?

Biogas

Geothermal

Coal

Wind