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7th Grade- Unit 8 (energy And Calculations)
Test Description: Energy
Instructions: Answer all questions to get your test result.
1) All forms of energy are a combination of
A
potential and thermal energy
B
chemical and kinetic energy
C
mechanical and chemical energy
D
potential and kinetic energy
2) Which type of energy is transmitted by vibrations of air?
A
nuclear
B
sound
C
electromagnetic
D
chemical
3) when energy is converted from one form to another, what is usually produced?
A
chemical energy
B
potential energy
C
heat
D
gravity
4) an objects kinetic energy is determined by it's
A
speed and position
B
speed and mass
C
position or composition
D
height and width
5) which of the following is a conversion of chemical energy into mechanical energy?
A
a ball rolling down a hill
B
a dark light bulb starting to glow
C
a person eating lunch and going for a jog
D
food being cooked in an oven
6) an energy efficient fan coverts a large portion of electrical energy that enters it into
A
thermal energy (heat) in the motor
B
kinetic energy of the fan blades
C
sound energy in the fans motor
D
an unwanted form of energy
7) The energy in wind that is used to generate electricity is
A
chemical energy
B
sound energy
C
kinetic energy
D
solar energy
8) a skier on top of a hill has potential energy due to
A
speed
B
energy efficiency
C
position
D
compression
9) a skateboarder on a ramp has the most potential energy
A
at the top of the ramp
B
half way down the ramp
C
at the bottom of the ramp
10) a skateboarder on a ramp has the most kinetic energy
A
at the top of the ramp
B
never has kinetic energy on a ramp
C
at the bottom of the ramp
D
half way down the ramp
11) the law of conservation of energy states that
A
energy can be created and destroyed
B
each time energy changes forms, more energy is produced
C
energy cannot be created or destroyed
D
energy cannot change forms
12) what does BTU stand for?
A
British Temperature Unit
B
British Time Unit
C
British Thermal Unit
D
Basal Thermal Unit
13) Energy from the movement of particles in matter is called
A
chemical energy
B
solar energy
C
thermal energy
D
nuclear energy
14) when the particles in an atom's nucleus break apart, this type of energy is released
A
mechanical
B
thermal
C
nuclear
D
chemical
15) Light is a form of
A
sound energy
B
thermal energy
C
electromagnetic energy
D
nuclear energy
16) a bowling ball and a soccer ball are rolling at the same speed, which has more kinetic energy?
A
the bowling ball
B
they are equal
C
the soccer ball
17) a car and an 18 wheeler truck are driving on a road at 80 mph, which has more kinetic energy?
A
truck
B
car
C
both are equal
18) Two trucks of the exact same size, make, and model are driving down the road. Truck A is going 60 mph and truck B is going 90 mph. which has more kinetic energy?
A
truck A
B
truck B
C
both are the same
19) which is not a way that technology has IMPROVED the way we currently use energy?
A
burning fossil fuels
B
LED light bulbs
C
hybrid cars
D
solar panels
20) what the the EER of a cooling system (air conditioner) that uses 500 watts of electricity to cool 6000 BTUs per hour at 95F?
A
8 EER
B
5 EER
C
12 EER
D
4 EER
*select an answer for all questions
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