WorksheetsFORCE WORK AND ENERGY
Total questions: 40
Worksheet time: 31mins
What is the net force?
3 N
3 N, right
17 N, right
3 N, left
Which of the following would it take the most force to move?
a 3-pound ball
a 5 pound ball
a 15 pund ball
a 25 pound ball
Fernando was working on an experiment for science class. He dropped 4 steel balls of different weights from the same height. Her noticed that the balls all reached the ground at the same time. Fernando is probably doing an experiment on the-
force of wind
effect of gravity
states of matter
magnetic force
In what condition the magnetic poles attract each other?
South-South
North-North
North-South
All of the above
A car moves along a level road.
The diagram shows all of the horizontal forces acting on the car.
Which statement is correct?
The car is slowing down.
The car is speeding up.
The car is moving at a constant speed.
The car is moving backwards.
The electrical wires in many homes are made of copper and covered with plastic. Why are copper and plastic good choices for electrical wires?
Copper is a conductor of electricity, and plastic is an insulator of electricity.
Copper is an insulator of electricity, and plastic is a conductor of electricity.
Copper is a conductor of electricity, and plastic is an insulator of heat.
Copper is an insulator of electricity, and plastic is a conductor of heat.
A student places a ball on the ground and kicks it hard. The ball moves along the ground. Which statement is true?
The kick decreases the weight of the ball
The kick applies force, which changes the direction of the ball.
The kick decreased the force of gravity acting on the ball.
The kick removes friction between the ball and the ground.
You have two objects of the same mass that collide. If they are going the same speed when they collide. What would be the result of the force?
The net force is going towards the left.
The net force is going towards the right.
The net force is zero. The forces will cancel each other.
The moon has a smaller mass than the Earth. If you were able to travel to the moon your weight would...
Increase
Decrease
Stay the same
Vary with day and night
When a pendulum swings, at which point is potential energy at its greatest?
1
2
3
4
Is this an example of work?
Yes
No
Is this an example of work?
Yes
No!
The law of Conservation of Energy says________
energy is constantly created
energy can not be created or destroyed instead it changes from one form to another
energy can not change forms
Two factors that determine work are...
Force
Mass
Velocity
Distance
Which form of energy do panels use to generate electricity?
Kinetic energy
Thermal energy
Sound energy
Light energy
What type of energy is being transformed when you use a hairdryer?
From thermal energy to electrical energy
From electrical energy to kinetic energy
From electrical energy to thermal energy
From kinetic energy to thermal energy
What type of energy is being transformed when you use a flashlight?
From chemical energy to electrical energy
From electrical energy to thermal energy
From chemical energy to light energy
From electrical energy to light energy
What type of energy is being transformed when you use a fan (ventilador)?
From electrical energy to wind energy
From electrical energy to thermal energy
From electrical energy to kinetic energy
From electrical energy to sound energy
Which of the following is an example of thermal energy?
A light bulb
The movement of a car
The digestion of food
Heat from a fire
Energy that does not run out of its supply is called...
Renewable Energy
Nonrenewable Energy
Recycled Energy
Potential Energy
What kind of energy makes the microwave work?
Light energy
Heat energy
Electrical energy
Chemical energy
Which Apple has the greatest Gravitational Potential Energy?
Apple A
Apple B
Apple C
Apple D
Choose the source of energy
Fossil fuel
Biomass
Radioactive substance
Wind
The _______________ is transformed into electrical energy inside the battery.
chemical energy
sound energy
kinetic energy
potential energy
You see your friend in class about to shoot this paper across the room. What form of energy is represented when your friend uses the rubber band to launch the paper into the air?
Gravitational potential energy
Kinetic energy
Elastic potential energy
Chemical energy
What type of source do you need in this power plant?
Fossil fuel
The Sun
Water
Wind
What type of source do you need in a biomass power plant?
Coal
Sunlight
Plant remains
Radioactive substance
What type of source do you need in this power plant?
Wind
Sunlight
Wave
Water
