What does the law of conservation of energy state?

• Energy can only be destroyed, not created.

• Energy is always increasing in the universe.

• Energy can be transformed from one form to another but cannot be created or destroyed.

• Energy can be created and destroyed.

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How does the total amount of energy in the universe change over time?

• It decreases.

• It fluctuates randomly.

• It remains the same.

• It increases.

What type of energy does the Sun release?

• Mechanical energy

• Thermal energy

• Nuclear energy

• Chemical energy

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What is the main principle behind Newton's Cradle?

• Energy is transferred from one ball to another.

• Energy is created within the balls.

• Energy is destroyed when balls collide.

• Energy is stored in the stationary balls.

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In Newton's Cradle, what happens to the energy of the first ball?

• It is converted into light energy.

• It is destroyed.

• It is transferred through the stationary balls.

• It remains in the first ball.

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Why does Newton's Cradle eventually stop moving?

• Energy is created within the balls.

• Energy is stored in the stationary balls.

• Energy is lost as sound and thermal energy.

• Energy is destroyed over time.

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What form of energy is lost when the balls in Newton's Cradle make a cracking noise?

• Thermal energy

• Sound energy

• Light energy

• Chemical energy

What other factor contributes to the slowing down of Newton's Cradle?

• Electrical resistance

• Air friction

• Magnetic fields

• Gravitational pull

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What is the key takeaway about energy from the video?

• Energy is never created or destroyed, only transformed.

• Energy is always decreasing.

• Energy is always increasing.

• Energy can be created and destroyed.

What happens to energy when it is transformed into unusable forms?

• It becomes new energy.

• It remains in the system but is not useful.

• It disappears.

• It is destroyed.

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