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Review: Module 1- Matter and Energy
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A kid is jumping up and down on a Pogo stick. When (or where) is all of his energy converted into almost all kinetic energy?
at the bottom of each jump (or just before touching the ground)
What will happen to this water skier's potential energy as he falls back down toward the water?
potential energy will decrease
In the bar graph shown in the image, potential energy + kinetic energy = __________ energy.
total
Describe what happens to the potential and kinetic energy of the blue skateboarder as he goes from the top of the half-pipe to the bottom.
Potential energy changes into kinetic. (Or potential energy decreases, and kinetic energy increases.)
The ball in position E has only kinetic energy, no potential energy. (TRUE or FALSE)
FALSE The ball in position E has some potential and some kinetic energy.
Why are arrows used in food webs and chains?
Arrows show the flow of energy.
organisms at the beginning of a food chain are called
producers
a model of the path that energy in food takes as it moves from organism to the next is called
food chain
breaks down decaying material in an ecosystem
decomposer
A model of how food chains over lap
Food Web
What type of energy is found in the propeller in BOTH diagrams? a. potential b. kinetic c. mechanical d. elastic
c. mechanical
What energy transformation is occurring in the diagram? a. chemical --> mechanical b. thermal --> kinetic c. mechanical --> thermal d. potential --> mechanical
d. potential --> mechanical
Which of the following is an example of kinetic energy? a. a light bulb turned on b. a car parked at the top of the hill c. a battery connecting to a circuit d. a comet flying in space
d. a comet flying in space
At which point in time is the energy in a slingshot being converted to kinetic energy? a. when the rubber band is stretching b. when the rubber band is released c. when the rubber band is fully stretched
b. when the rubber band is released
As a snowball is rolling down a hill, it is getting faster and faster. Which statement is true? a. potential energy changes to kinetic b. the snowball gains potential energy c. the snowball is gaining kinetic energy until it stops
a. potential energy changes to kinetic
At which 2 points is the potential energy increasing in the marble diagram? 1 and 2 2 and 3 1 and 3 2 and 4
2 and 4
How does mass effect the potential energy of an object? a. lager mass=less potential energy b. larger mass=more potential energy c. smaller mass=more potential energy
b. larger mass=more potential energy
At which point is the potential energy increasing? 1, 2, 3, 4, or 5
4
What is potential energy?
Energy that is stored.
What is kinetic energy?
Energy in motion
True or False Energy can change forms.
True
True or False Energy can be created, but not destroyed
False
Which point has the highest potential energy?
A
Describe what is happening in the picture.
Chemical energy is changing to heat energy.
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