Images of various energy sources including fossil fuels, wind, solar, and oil.

Let's solve each question one by one and provide explanations.

---

1. Most of the energy we use originally come from:

a. The sun ✔
b. The air
c. The soil
d. The oceans

✔ Correct answer: a. The sun

Explanation:
Most of the energy we use ultimately comes from the Sun. For example:
- Solar energy is direct.
- Wind energy is caused by uneven heating of the Earth’s surface by the Sun.
- Hydropower relies on the water cycle, driven by solar energy.
- Fossil fuels (coal, oil, gas) were formed from ancient plants that grew using sunlight via photosynthesis.
- Even biomass energy comes from plants that use sunlight.

So, the Sun is the original source for most energy forms.

---

2. Which of the following is a non-renewable energy resource?

a. Solar
b. Biomass
c. Hydroelectric
d. Coal ✔

✔ Correct answer: d. Coal

Explanation:
Non-renewable resources are those that cannot be replenished in a short time.
- Coal is a fossil fuel formed over millions of years and is finite.
- Solar, biomass, and hydroelectric are renewable because they are naturally replenished.

---

3. What type of energy is derived from hot groundwater?

a. Solar energy
b. Geothermal energy ✔
c. Nuclear energy
d. Hydroelectric energy

✔ Correct answer: b. Geothermal energy

Explanation:
Geothermal energy comes from heat stored beneath the Earth’s surface. Hot groundwater or steam from underground reservoirs can be used to generate electricity or heat buildings. This is geothermal energy.

---

4. Which of the energy sources below is renewable?

a. Fossil fuels
b. Coal
c. Nuclear
d. Wind ✔

✔ Correct answer: d. Wind

Explanation:
Renewable energy sources are naturally replenished.
- Wind is renewable because it is generated by the Sun's heating of the atmosphere.
- Fossil fuels, coal, and nuclear (using uranium) are non-renewable because their sources are limited.

---

5. Solar, geothermal and hydropower energy are some of the renewable sources of energy. They are called renewable because they

a. are clean and free to use
b. can be converted directly into heat and electricity
c. can be renewed by nature in a short period of time ✔
d. do not produce air pollution

✔ Correct answer: c. can be renewed by nature in a short period of time

Explanation:
The key definition of "renewable" is that these resources are naturally replenished within a human timescale:
- The Sun shines daily → solar.
- Water cycles continuously → hydropower.
- Earth’s internal heat is constant → geothermal.

While options a and d are benefits, they are not the *definition* of renewable. Option b is not always true (e.g., solar needs conversion via panels). So, c is the best and most accurate answer.

---

6. Geothermal energy can be found

a. everywhere
b. drilling out of mines
c. in specific parts of the Earth ✔
d. under the seabed

✔ Correct answer: c. in specific parts of the Earth

Explanation:
Geothermal energy is most accessible in areas with high geological activity, such as:
- Volcanic regions
- Tectonic plate boundaries (e.g., Iceland, California, New Zealand)

While geothermal heat exists everywhere beneath the surface, usable geothermal energy is only practical in specific locations where the heat is close enough to the surface.

Option d ("under the seabed") is partially true (e.g., offshore geothermal), but it's not general. So c is the best answer.

---

✔ Final Answers Summary:

| Question | Answer |
|--------|--------|
| 1 | a. The sun |
| 2 | d. Coal |
| 3 | b. Geothermal energy |
| 4 | d. Wind |
| 5 | c. can be renewed by nature in a short period of time |
| 6 | c. in specific parts of the Earth |

Let me know if you'd like this formatted as a completed worksheet!