WorksheetsModule 4 Test
Total questions: 19
Worksheet time: 10mins
Name
Class
Date
1.
The amount of kinetic energy a moving object has depends on its mass and its __________ .
a)
Conservation of Energy
b)
simple machines
c)
friction
d)
mechanical advantage
e)
Velocity
2.
A car engine changes chemical potential energy into the _____________ energy of the moving car.
a)
Potential
b)
Kinetic
c)
position
d)
constant
3.
What is the kinetic energy of a 100 kg cart moving at a speed of 7 m/s? K.E. = 1/2 m v^2
a)
700 Joules
b)
350 Joules
c)
2,450 Joules
d)
45 Joules
4.
What is the gravitational potential of a 10 kg sack of groceries on a shelf 1 m above the floor?
GPE = m x 9.8 m/s² x h
a)
8 Joules
b)
98 Joules
c)
70 Joules
d)
12 Joules
5.
A hammer falls off a rooftop and strikes the ground with a certain kinetic energy. How would its kinetic energy compare if it fell from a roof twice as tall?
a)
It would have half the kinetic energy.
b)
The kinetic energy would be the same
c)
The kinetic energy would increase 9.8 m/s^2 more
d)
The kinetic energy would double.
6.
If a box is pushed 10 meters with a force of 20 Newtons, what is the amount of work? W=FxD
a)
200 N
b)
2 N
c)
.5 N
d)
24 N
7.
The energy stored in foods and fuels is ______________ potential energy.
a)
Conservation of Energy
b)
chemical
c)
simple machines
d)
friction
e)
mechanical advantage
8.
The law of _______________states that energy cannot be created or destroyed.
a)
Conservation of Energy
b)
chemical
c)
simple machines
d)
friction
e)
mechanical advantage
9.
A compound machine is a combination of two or more ____________________ .
a)
Conservation of Energy
b)
chemical
c)
simple machines
d)
friction
e)
mechanical advantage
10.
The number of times a machine multiplies the effort force is the ________________ of the machine
a)
Conservation of Energy
b)
chemical
c)
simple machines
d)
friction
e)
mechanical advantage
11.
Type of energy due to both the position and motion of an object
a)
mechanical
b)
power
c)
friction
d)
radiant
e)
kinetic
12.
The rate at which energy is converted
a)
power
b)
friction
c)
radiant
d)
kinetic
e)
conservation
13.
Type of energy transformed into thermal energy in a toaster
a)
electricity
b)
power
c)
friction
d)
radiant
e)
kinetic
14.
Force that acts between two sticks when they are rubbed together
a)
friction
b)
power
c)
radiant
d)
kinetic
e)
conservation
15.
Unit used to measure the amount of energy that people get from food
a)
Calorie
b)
power
c)
friction
d)
radiant
e)
kinetic
16.
Type of energy transformed into chemical energy by plants
a)
radiant
b)
power
c)
friction
d)
kinetic
e)
conservation
17.
Type of energy that is greatest at the top of a swing's path
a)
potential
b)
power
c)
friction
d)
radiant
e)
kinetic
18.
Type of energy that is greatest at the bottom of a swing's path
a)
kinetic
b)
power
c)
friction
d)
radiant
e)
conservation
19.
A person lifts a 20 kg box to a height of 3 meters in 5 seconds. What is the person's power output?
Power = Work/Time
Work = Force x Distance
Force = Mass x Acceleration
Acceleration = 9.8 m/s²
a)
558 Joules
b)
265 N
c)
117.6 Watts
d)
244 m/s²
100 %
