Read About It_ Conservation of Energy

What happens to energy in a system according to the law of conservation of energy?

• It is always increasing.

• It is always decreasing.

• It remains the same.

• It disappears.

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How does energy transfer occur?

• By creating new energy.

• By moving energy from one place to another.

• By destroying energy.

• By using up energy completely.

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When is mechanical energy conserved?

• When a system is influenced by friction

• When a system is influenced only by gravity

• When a system is influenced by air resistance

• When a system is influenced by external forces

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What happens to a roller coaster's hills as the ride continues?

• They get larger

• They get smaller

• They remain the same size

• They disappear

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Why do roller coaster hills tend to get smaller during the ride?

• Because of increased speed

• Because of mechanical energy transformation to friction

• Because of added weight

• Because of air resistance

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What is the role of friction in a roller coaster ride?

• It speeds up the ride

• It transforms mechanical energy and slows down the ride

• It has no effect

• It increases potential energy

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What does the law of conservation of energy state in the context of electrical circuits?

• Energy is created in a circuit.

• Energy is destroyed in a circuit.

• Energy is neither created nor destroyed in a circuit.

• Energy is only transformed into light.

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What remains constant in an electrical circuit according to the law of conservation of energy?

• The amount of light.

• The amount of heat.

• The total amount of energy.

• The amount of chemical energy.

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Which organism is directly eaten by owls in the food web?

• Grasses

• Mice

• Berries

• Small birds

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What is the role of small birds in the food web?

• They produce energy

• They are decomposers

• The compete for food with the owl

• They transform light energy

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