| Energy Transfer | Kinetic Energy & Potential Energy | Kinetic Energy & Mass | Kinetic Energy & Speed | Graphing |
|---|---|---|---|---|
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Energy cannot be created or destroyed, it can only change forms.
State the law of conservation of energy.
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Stored energy based upon height
What is Potential Energy?
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The amount of stuff in an object.
What is Mass?
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How fast an object travels or its distance over time.
What is speed?
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Yes, because when mass increases, so does kinetic energy.
Look at the graph on your teacher's Google Slides. Does the graph on Mass vs. Kinetic Energy correctly represent the information in the data table?
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No, because of the law of conservation of energy. Energy cannot be created or destroyed. Therefore, the amount of energy is fixed.
Does the amount of energy in the universe ever change? Why or why not?
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Energy of Motion
What is Kinetic Energy?
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It's kinetic energy also increases
What happens to an object's kinetic energy if its mass increases?
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It's kinetic energy also increases
What happens to an object's kinetic energy if its speed increases?
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Yes, because when speed increases, so does kinetic energy.
Look at the graph on your teacher's Google Slides. Does the graph on Speed vs. Kinetic Energy correctly represent the information in the data table?
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Chemical (battery) --> mechanical (turn on button) & light (radiant) & thermal energy (heat)
Identify and describe the energy transfer that takes place when you turn on a flash light.
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A change in the object's height from the ground
What causes an object's PE to change?
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It's kinetic energy also decreases
What happens to an object's kinetic energy if its mass decreases?
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It's kinetic energy also decreases
What happens to an object's kinetic energy if its speed decreases?
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This is a graph that represents data on mass and kinetic energy. This graph shows that when mass decreases, so does kinetic energy.
Explain what this graph means.
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Electrical (from power outlet) --> chemical (in phone's battery)
Identify and describe the energy transfer that takes place when you charge a cell phone.
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Most - at the top of the hill
Least - at the bottom of the hill
If you are riding a roller coaster, where would you have the most PE? Where would you have the least PE?
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Both variables do the same action. When mass increases, kinetic energy increases. When mass decreases, kinetic energy decreases.
Explain the relationship between mass and kinetic energy.
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Both variables do the same action. When speed increases, kinetic energy increases. When speed decreases, kinetic energy decreases.
Explain the relationship between speed and kinetic energy.
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This is a graph that represents data on speed and kinetic energy. This graph shows that when speed increases, so does kinetic energy.
Explain what this graph means.
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Many different options for answers.
Identify and describe two energy transfers that occur when you drive a car.
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PE - increases
KE - decreases
What happens to a skaters PE when he moves up a hill? KE?
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The semi-truck would have more kinetic energy because it has more mass.
If there is a sportscar and a semi-truck traveling the same speed, which one would have more kinetic energy? Explain your answer.
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The semi-truck traveling at the speed of 50 m/s because it is moving faster.
If there are two semi-trucks traveling at different speeds (10 m/s vs 50 m/s), which semi-truck would have more kinetic energy?
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Speed has a greater effect on kinetic energy than mass. When mass doubles, kinetic energy doubles. BUT, when speed doubles, kinetic energy quadruples.
Which has a greater effect on kinetic energy? Speed or mass? Explain your answer.
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