Topic 3 Kinetic and Potential Energy Test Review

An object is in motion if its

• position changes relative to its surroundings.

• energy is applied to the object.

• a force is applied to it.

• it loses energy.

Force is

• a push or a pull.

• is with you.

• is potential energy.

• nuclear energy

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I was trying to open a jar, but it would not open. Did I do any work?

• yes

• no

• a little

The bobsled is an event in the winter Olympics. In this event, each sled and its riders speed down an icy track. Which factor(s) affect how much kinetic energy the sled and its team have when the sled crosses the finish line?

• mass only

• speed and time

• speed and mass

• speed, mass, and time

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Work requires

• sweat.

• force

• motion.

• potential energy.

Before Mrs. Harris decides what to wear for the day, she wants to know what the temperature is going to be. Which type of energy is most closely related to temperature?

• chemic

• potential

• mechanilcal

• thermal

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Johanna took her little brother to the playground because he likes to swing. Look at the diagram that shows Johanna pushing her brother on the swing. Which statement is true about the transformation between kinetic and potential energy while the boy swings?

• Kinetic energy changes to potential energy between points A and B.

• Potential energy changes to kinetic energy between points A and B.

• Potential energy changes to kinetic energy between points B and C.

• Potential and kinetic energy remain constant between points A and C.

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According to the Law of Conservation of energy, energy is neither created or lost. Then why does the Newton's Cradle not continuously go on forever? Choose the MOST correct answer.

• Some energy is transformed into thermal energy.

• The Newton's Cradle runs out of potential energy.

• Gravity causes it to stop.

• Some energy is transformed into thermal energy and sound.

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A hot air balloon uses what kind of energy to expand and float?

• electrical

• thermal

• chemical

• mechanical

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When objects are in motion, they are demonstrating

• potential energy

• thermal energy

• kinetic energy

• nuclear energy

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