Unit 9 Science Review

Trinity buys a battery for her flashlight. Which type of energy does the battery have?

• light answer

• kinetic energy

• potential energy

• electrical energy

Ray holds an ice cube in his hand. After some time passes, the ice cube begins to melt. Which term describes the process of heat transfer?

• conduction

• convection

• insulation

• radiation

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Look at the picture below. As the soup gets hotter, it heats up the spoon. Which explains why the spoon gets hot?

• conduction

• convection

• insulation

• radiation

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The pots and pans in Sarah’s kitchen are made of steel, copper, and aluminum. What is the best reason Sarah’s pots and pans are made of these materials?

• They are easy to shape.

• They have low melting points.

• They are excellent conductors of heat.

• They have the ability to stop the flow of heat.

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Objects can have potential energy because of their position. Which object has potential energy?

• A parked car idling.

• a rocket on its way to space.

• a spinning top on the floor

• a mango hanging from a branch

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Oki’s house gets very cold on winter nights. She has one thin blanket on her bed. What could she do to stay warmer?

• use another thin blanket

• use two fluffy blankets instead

• use a fluffy blanket and a thin blanket

• use a fluffy blanket instead of the thin blanket

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Fossil fuels are a major source of energy. Which material is not a fossil fuel?

• coal

• natural gas

• oil

• wood

Which form of energy results from vibrations that travel through air?

• sound energy

• potential energy

• electrical energy

• chemical energy

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Shawn and his family sit around a campfire. What provides energy to keep the fire going?

• flames

• heat

• matchstick

• wood

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Look at the picture. If the spring is squeezed to half its length in the picture, what effect will that have on the ball?

• the ball will create more energy.

• the ball's kinetic energy will decrease.

• the ball's potential energy will increase.

• the ball's potential energy will decrease.

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