Why is the first hill of a roller coaster the tallest?

It stores enough energy for the whole ride

Why does a pendulum eventually stop?

Friction and air resistance turn energy into heat

Energy Conservation Quiz: Places, People and Key Facts

This energy conservation quiz covers the law of conservation of energy, kinetic and potential energy, roller coasters, pendulums, energy transformations in power stations and ways to save energy at home. Ten questions on places, people and key facts about energy.

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🎯 Daily Trivia Challenge • 🧠 10 Questions • ⏱️ 150 Seconds

Question 1 / 10 Time: 150s

Law
What does the law of conservation of energy say?
Motion
What is the energy of a moving object called?
Height
What energy does a book on a high shelf have?
Coaster
Why is the first hill of a roller coaster the tallest?
Pendulum
Why does a pendulum eventually stop?
Units
What is the SI unit of energy?
Food
What energy is stored in food?
Bulb
What does an LED bulb mainly convert electricity into?
Power
What energy change happens in a wind turbine?
Einstein
Which equation shows mass can be converted into energy?

Explanations: answer key for all 10 questions

Q1: What does the law of conservation of energy say?
Answer: Energy cannot be created or destroyed
It only changes from one form to another.
Q2: What is the energy of a moving object called?
Answer: Kinetic energy
It depends on mass and speed squared.
Q3: What energy does a book on a high shelf have?
Answer: Gravitational potential energy
It can turn into kinetic energy if it falls.
Q4: Why is the first hill of a roller coaster the tallest?
Answer: It stores enough energy for the whole ride
Some energy is lost to friction along the way.
Q5: Why does a pendulum eventually stop?
Answer: Friction and air resistance turn energy into heat
The energy is not lost, just spread out.
Q6: What is the SI unit of energy?
Answer: Joule
It is named after James Prescott Joule.
Q7: What energy is stored in food?
Answer: Chemical energy
Food labels show it in calories or kilojoules.
Q8: What does an LED bulb mainly convert electricity into?
Answer: Light
Old bulbs wasted most energy as heat.
Q9: What energy change happens in a wind turbine?
Answer: Kinetic to electrical
Moving air spins the blades.
Q10: Which equation shows mass can be converted into energy?
Answer: E = mc²
Nuclear power uses this principle.

Energy Conservation Quiz – Energy Changes Form

The law of conservation of energy says energy cannot be created or destroyed, only transformed. When you ride a bike, chemical energy from food becomes kinetic energy, and braking turns it into heat. The total amount of energy stays the same.

Roller coasters and pendulums show these changes clearly. At the top of a hill, a coaster has the most potential energy, which becomes kinetic energy as it races downhill. Friction gradually turns some of it into heat and sound.

Power stations transform chemical, nuclear, wind, water or solar energy into electricity. Saving energy at home means using efficient devices, insulating buildings and switching things off, which reduces costs and pollution.

What This Quiz Teaches

This quiz is for students learning about energy.

What conservation of energy means
What kinetic and potential energy are
How roller coasters work
Why pendulums stop
How power stations change energy

Did You Know?

Plants store solar energy as chemical energy.
A calorie is the energy to heat 1 gram of water by 1 °C.
Regenerative brakes recover energy.
The Sun turns mass into energy.
Energy-efficient homes need less heating.