Science DCFA Review

What will happen when these magnets are brought close together?

• They will attract each other.
• They will repel each other.
• Both magnets will turn to the left
• Both magnets will turn to the right

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Two friends stay up late at night to read a book before going to sleep. What kind of energy makes it possible for the friends to see the pages?

• light energy

• sound energy

• mechanical energy

• thermal energy

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Joey went to a live concert. When he woke up the next morning, his ears were ringing and he had a headache due to the loud noise at the concert. What form of energy causes loud noises?

• light energy

• sound energy

• thermal energy

• mechanical energy

Light travels in ________.

• straight lines, in one direction.

• curved lines, in one direction.

• straight lines, in all directions.

• curved lines, in all directions.

Mechanical energy is...

• Energy produced by a machine or moving part

• Energy produced from vibration that you can hear

• Energy that can be seen by the eye

• Energy that causes a change in temperature between materials

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In the tug of war image, if both teams are pulling with the same amount of force, what will happen?

• The green team will win because the force on the rope is unbalanced.

• The blue team will win because the force on the rope is unbalanced.

• Both teams will not move because the force between the two teams is balanced.

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What form of energy does a campfire give off?

• sound and thermal

• light and thermal

• mechanical and light

• thermal and mechanical

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Willy is dragging his brother Bobby down a hill. The wagon starts rolling too fast. How can Willy slow down the speed of the wagon?

• Pull the handle.

• Grip the handle tighter.

• Push the handle.

• Release the handle.

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What pulls raindrops down to Earth?

• the clouds

• the force of gravity

• the rain

• the ground

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How does this young boy cause the swing to move back and forth?

• By spinning the swing.

• By pushing or pulling on the swing.

• By lifting the swing in the air.

• By sitting in the swing.

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