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WorksheetsEnergy
Total questions: 34
Worksheet time: 31mins
The sun provides ____________ and ____________ energy that can be harnessed and used for solar power.
chemical, sound
mechanical, light
sound, light
light, thermal
Energy can't be .....
transformed.
made or destroyed.
converted.
harnessed or produced.
Which is NOT a true statement about energy?
it can change into another form of energy
it can cause a temperature change
it can cause movement
it can be completely used up
What type of energy do we get from the food we eat?
light
thermal
chemical
sound
When a football player kicks a ball, he transfers energy to the ball. What happens as a result?
the ball gains kinetic energy
the ball loses sound energy
the ball loses thermal energy
the ball gains light energy
Which type of energy does a wind-up toy use?
A. mechanical
B. light
C. thermal
D. sound
What is the correct unit for energy?
meters (m)
kilogram meters per second (kg m/s)
Newtons (N)
Joules (J)
What is the equation for calculating gravitational potential energy
mv
1/2 mv^2
mgh
Ft
What is the equation for calculating kinetic energy?
mv
1/2 mv^2
mgh
Ft
Calculate the potential energy of a car with a mass of 2,500 kg that is on a hill 100 meters above sea level. (g = 10 Nkg-1)
250,000 J
2,500,000 J
25,000,000 J
250 J
Lilly's cat ran through your yard. The cat has a mass of 5 kg. He is running at a speed of 3 m/s. What is the kinetic energy of the cat as he runs? (KE = 1/2mv2)
8.5 J
45 J
7.5 J
22.5 J
Alice kicks a soccer ball with a mass of 2.1 kg. The ball leaves the ground moving 30 meters per second. What is the kinetic energy of the soccer ball? (KE = 1/2mv2)
567 J
900 J
945 J
30 J
If the 0.3 kg marble was moving at 6 m/s at the bottom of the ramp, how much kinetic energy did the marble have? (KE = 1/2mv2)
5.4 J
1.8 J
3 J
6 J
If the 1.2 kg basketball rolls at 3 m/s, what is it's kinetic energy? (KE = 1/2mv2)
2.7
5.4
3.6
9
What is the mass of a ball that has a kinetic energy of 115 J and is traveling at a speed of 9 m/s?
1035 kg
23.5 kg
12.8 kg
2.84 kg
A 5 Kg body is having a Kinetic energy of 250 J. What is the velocity (or speed) of the body?
10 m/s
15 m/s
20 m/s
40 m/s
It took 500 Newtons of force to push a car four meters. How much work was done?
2000 J
125 J
0.008 J
500 J
Which is the correct unit for work?
Joules
Newton
meter
Watts
What is the correct unit for power?
Watt
Joules
Newtons
seconds
What is the power of a kitchen blender if it can perform 3,750 Joules of work in 15 seconds?
250 W
0.004 W
56,250 W
25 W
How much power is used if a force of 35 Newtons is used to push a box a distance of 10 meters in five seconds? (Hint: Solve for work first. This is a 2-step problem.)
70 W
3.5 W
7 W
350 J
