jeopardy end of year review part 2 by lisa bolin
TRANSCRIPT
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Jeopardy
End of Year Review Part 2
By Lisa Bolin
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Energy Motion Force MagnetismHeat and Temperature Waves
Sound and Light
20 20 20 20 20 20 20
40 40 40 40 40 40 40
60 60 60 60 60 60 60
80 80 80 80 80 80 80
100 100 100 100 100 100 100
120 120 120 120 120 120 120
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20 Points
What is energy?
The ability to do work.
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40 Points
What are energy conversions?
Changes from one form of energy to another.
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60 Points
What is the energy of motion?
Kinetic energy
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80 Points
What is potential energy?
The energy of an object because of its position.
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100 Points
How do you determine gravitational potential energy?
By multiplying the weight times the height of an object.
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120 Points
Identify the energy conversions in the following:1. Toaster: electrical energy to __________energy
2. Toy airplane: wound-up rubber band is elastic potential energy which converts into _______________energy.
3. Eating food: _____________ energy is converted into thermal energy and kinetic energy
1. Thermal energy
2. Kinetic
3. Chemical
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20 Points
How can you observe motion? Give several examples.
By using a reference point such as a tree, or anything
that stays in one place.
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40 Points
How do you determine the speed of an object?
By measuring the distance traveled by an object and the time it took to travel that distance.
Then divide the distance by the time
distance / time
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60 Points
Define velocity.
The speed in a particular direction.
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80 Points
Define acceleration.
The rate at which velocity (speed in a particular direction.) changes.
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100 Points
When does an object accelerate?
Whenever it its speed, direction, or both change.
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120 Points
Explain how the line on a distance/time graph would look when an object is:
1. speeding up
2. slowing down
3. stopped
1. When speeding up, the line with slope upwards.
2. When an object is slowing down, the line will slope downwards.
3. When an object is not moving, the line will be
horizontal.
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20 Points
What is force?
A push or a pull.
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40 Points
What is the SI unit used to express force?
The newton (N)
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60 Points
What is friction?
A force that opposes motion.
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80 Points
Once an object is in motion or resting, what kind of force is needed to change
what it is already doing?
Unbalanced
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100 Points
Name 3 ways friction is increased
(helpful).
1. Sand put on a road or sidewalk to prevent slipping.
2. Force applied while erasing a dry erase board.
3. Deep tread on the bottom of athletic shoes.
4. Wearing batting gloves.
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120 Points
Name 3 ways friction can be decreased.
(Otherwise, may be harmful.)
1.Using oil on a bike chain or engine parts.
2. Applying wax on skis.
3. Waxing the bowling alley lane.
4. Use of ball bearings.
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20 Points
What is a magnet?
Any material that attracts iron or things that are made
of iron.
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40 Points
What are the points on a magnet that have opposite magnetic qualities?
Magnetic poles
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60 Points
Describe what happens when a magnet’s domains are lined up and what
happens when they get scrambled.
When a magnet’s domains are lined up, the magnet will be magnetized, when they are scrambled, the magnet will no longer be
magnetized.
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80 Points
Name two ways a magnet can lose its magnetic properties.
1. By dropping or hitting it hard.
2. Putting it in a strong magnetic field that is opposite to its own.
3. Increasing the temperature.
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100 Points
If you allow a magnet to hang freely, which magnetic pole will point to the
geographic north, why?
The north magnetic pole will point to the geographic north because that is actually a
magnetic south pole.
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120 Points
What exists in the region around a magnet in which forces can act and how can you see them if they are invisible?
Magnetic field lines exist around all magnets and can be seen by sprinkling iron filings around them.
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20 Points
What is temperature?
A measure of the average kinetic energy of the particles of an object.
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40 Points
What is heat?
The energy transferred between objects that are at different temperatures.
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60 Points
What happens when two objects at different temperatures come in contact
with each other?
Thermal energy will be transferred from the higher temperature object to the lower temperature object until
both objects are at the same temperature.
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80 Points
Define and give an example of thermal conduction.
The transfer of thermal energy from one substance to another through direct contact.
Ex. The handle of a pot on the stove will get hot.
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100 Points
Define and give an example of convection.
The transfer of thermal energy by the movement of a liquid or a gas.
Ex. Water at the bottom of a pot heats up, rises, then when it cools off will sink again.
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120 Points
Define and give an example of radiation.
The transfer of thermal energy by electromagnetic waves, such as visible light and infrared waves.
Ex. All objects radiate electromagnetic waves; a portable heater would be an example of an object that is used for that
purpose.
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20 Points
What is a wave?
Any disturbance that transmits energy through matter or empty space.
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40 Points
What is a medium, and give examples.
A medium is a substance through which a wave can travel. It can be any solid,
liquid or a gas.
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60 Points
How do you determine the wavelength?
Wavelength is the distance between any two crests or compressions next to each other.
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80 Points
As the frequency increases, the wavelength _______________.
As the frequency increases, the wavelength decreases.
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100 Points
Describe the vibration of the particles in a transverse wave.
The particles vibrate back and forth, perpendicular to the direction the wave is going
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120 Points
Describe the vibration of the particles in a longitudinal wave.
The particles vibrate back and forth in the direction the wave moves.
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20 Points
Sound waves are _____________________ waves.
Sound waves a re longitudinal waves.
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40 Points
Light waves travel as ____________________ waves.
Light waves travel as transverse waves.
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60 Points
_____________________ waves require and medium, and _____________ waves do not require a medium.
Sound waves require a medium and light waves do
not require a medium.
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80 Points
Sound waves travel fastest through ________________.
Sound waves travel fastest through solids. (steel is the best.)
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100 Points
When people wear white clothes, which colors are reflected? Absorbed?
When people wear blue clothes, which colors are reflected, absorbed?
White clothes- all the colors (ROY G. BiV) are reflected, none are absorbed.
Blue clothes- Only blue is reflected, all the others are absorbed.
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120 Points
How is the electromagnetic spectrum arranged and name the waves.
The EM spectrum is arranged from long to short wavelength and from low to high frequency. The waves are radio,
microwave, infrared, visible light, ultraviolet, x-rays, and gamma rays..