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There are 2 types of general energy. This one is the energy of motion.
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What is it called? |
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If a bowling ball and a soccer ball were moving at the same speed, which one would have more kinetic energy?
why? |
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the bowling ball would have more kinetic energy
because it has more mass (weight) |
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If two identical bowling balls were rolling along at different speeds, which one would have more kinetic energy?
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Definition
| the bowling ball that is moving at a faster speed would have more kinetic energy |
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| This is the stored energy that an object has due to its position or what it is made of. This what type of energy? |
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Pulling back the rubberband on a slingshot as far back as you can increases what type of energy in the slingshot? |
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The fuel in a rocket engine has energy stored up in its bonds. This chemical energy is a type of what general form of energy? |
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Finish the definition for energy:
"the ability to cause _______ |
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"You can create energy!"
True or False |
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Definition
| You cannot create energy nor can you destroy energy. It only changes form. |
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| If a TV turns 60% of electrical energy into heat energy, and 28% into light energy, then how much of the electrical energy is turned into sound energy? |
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Definition
12% is turned into sound energy
Remember, the energy should always total 100%!
60% = heat
28% = light
12% = sound
100% Total Energy |
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Term
The energy that moves objects is what type of energy?
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When a wrecking ball is held up high, the ball has potential energy. When the ball starts to swing towards the building, the ball has kinetic energy. When the potential and kinetic energy combine, and the ball smashes the building, you have what type of energy?
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Sound travels at how many miles per hour?
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| What must you have before a sound can be created? |
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Sound can travel through empty space?
True or False
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Definition
false
sound waves can only travel across matter such as a solid, liquid, or gas. |
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This is a unit for describing sound pressure levels. What is it called?
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Something giving off a sound of 30 decibels could harm your hearing?
True or False |
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Definition
False.
30 decibels would be like a quiet house in the country |
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Term
What do we call the energy that is stored up in the bonds between atoms and molecules?
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Gasoline is a good example of what kind of energy?
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Definition
chemical energy
the energy in the gasoline is stored up in the bonds between the molecules that make the gas.
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"The total amount of energy from the movement of particles in matter."
This is the definition of what type of energy?
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| What happens when the particles in an object move faster and faster? |
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Definition
The temperature rises.
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What do we call it when thermal energy transfers from a warmer object to a cooler object?
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Fill in the blank.
Electromagnetic energy is energy in the form of electromagnetic __________. |
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[image]
1. Which of the 3 waves above would probably be an x-ray?
2. Which of the 3 waves above would probably be a radio wave?
3. Which of the 3 waves above would probably be a microwave?
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Definition
[image]
1. the x-ray would be the bottom wave (high frequency)
2. the radio wave would be the top wave (low frequency)
3. the microwave would be the middle wave (medium frequency) |
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Term
The distance between the crests of two waves next to each other is known as what?
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Which one of the following would have a very short wavelength and a very high frequency?
a. gamma ray
b. radio wave
c. visible light
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| Nuclear energy is energy found in the center of what? |
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Definition
the center of an atom (called the nucleus)
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When the nucleus of an atom is split into two smaller particles and energy is released, this is known as what?
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The center of two atoms (called nuclei) join together to form one heavier nucleus and energy is released. This is known as what?
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A battery is a good example of chemical energy which is a type of potential energy. True or False?
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Definition
| True. A battery is stored up energy. |
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Nuclear weapons have only been used twice in the entire world. Where did this happen?
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Definition
| Japan in 1945 during World War II. Bomb was dropped by the United States. |
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| If you were to break the bonds of the molecules within gasoline by using a spark, what 3 types of energy would the chemical energy be changed into? |
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Definition
the chemical energy of the gasoline would change into light energy, heat energy, and sound energy
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If a pond in a field measures 50oF and a mug of coffee measures 90oF, which of the two objects has a greater thermal energy? Why?
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Definition
| The pond has has more thermal energy because it has more mass. There are many more molecules of water in the pond than in the mug. |
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Term
Why do sound waves travel through solid objects faster than through the air?
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