Unit 3 Energy

In an investigation, water in an Erlenmeyer flask is placed on a hot plate. As the water is heated, the cooler, denser water at the surface sinks and pushes the warmer water to the top. What do the arrows in the drawing MOST likely represent?

• phase changes
• convection currents
• electromagnetic radiation
• energy transfer by conduction

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Kinetic energy is the greatest at

• point 3

• point 1

• point 5

• points 2 and 4

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Energy cannot be created or destroyed, but only change form.

• Law of Matter

• Law of Conservation of Energy

• Law of Confusion

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You plug your phone into the outlet and the charger starts to feel hot.

• Electrical > Mechanical
• Electrical > Chemical
• Electrical > Heat
• Electrical > Nuclear

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Which letter shows the ball when it has the maximum Kinetic Energy?

• A

• B

• D

• F

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At which point is potential energy greatest

• W
• X
• Y
• Z

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Mass and kinetic energy have a _________ relationship.

• Exponential
• Linear
• Divergent
• Facebook-Official

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Velocity and kinetic energy have a _________ relationship.

• Linear
• Exponential
• Divergent
• Facebook-Official

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When energy from the sun reaches the air above land, the air warms and rises. Along a coastline, cooler air above the ocean flows toward the land to replace this rising air. Which of the following best describe these processes?

• conduction and convection

• radiation and convection

• conduction, convection, and radiation

• radiation and conduction

When a pendulum swings, at which point is kinetic energy highest?

• 1
• 2
• 3
• 4

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