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What does conservation of energy mean?
Energy can be neither created nor destroyed, it can only transfer to other objects or change form
Which of these is NOT a fossil fuel?
 
solar
 
coal
 
oil
 
natural gas
When a moving object slows down, what happens to its energy?
It has less motion energy. Some of it is transferred to other objects, such as the ground or the air
Which is these is NOT a form of stored chemical energy
 
a parked car
 
coal
 
a battery
 
food
When energy is transferred in a collision, what three things can you observe?
heat, sound, change in motion energy/direction
How can you give more motion energy to a soccer ball?
possible answer: Kick it to make it move faster
How can you increase the potential energy stored in a spring?
compress it, or stretch it
A rubber band is stretched and then released. What kind of energy transformation occurs?
stored/elastic/potential energy --> motion energy
Sound is made when:
 
objects vibrate
 
particles interact with light
 
waves travel through space
 
heat transfers to a warmer object
How can you measure heat energy?
a thermometer
What is an example of stored energy transforming into light energy?
Possible answers: battery to a light bulb, a candle, a glowstick
How much energy do loud sounds have?
loud sound = high energy
Name 5 different types of energy
types of energy: heat, EMR/light, sound, movement, electricity, chemical, gravitation, nuclear, elastic
What is the energy level of a cold object?
low thermal energy
If you put an ice cube in a cup of hot tea, what direction does the heat energy transfer?
The heat transfers from the hot tea to the cold ice cube.
What kinds of energy do you get from the sun? What type of energy does a solar panel use?
The sun gives us light and heat. Solar panels only use light.
What energy transformation occurs in a blow dryer? (name at least one)
electricity into heat, motion, and sound
Which of the following is a type of potential energy?
 
chemical
 
electrical
 
sound
 
EMR
Which of the following is a type of kinetic energy?
 
sound
 
gravitational
 
chemical
 
elastic
What is the name of the device that spins when pushed by wind, water, or steam?
turbine
What type of circuit lets energy flow from a battery to a light bulb?
a closed circuit
What types of energy does a candle give off?
Light and heat
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