WorksheetsReview
Total questions: 50
Worksheet time: 36mins
6.8(A) Released A marble is given potential energy by being placed at Location W. When the marble is released, it rolls down the track. At which location does the marble have maximum kinetic energy?
Location W
Location X
Location Y
Location Z
6.9(C) Released A cook heats a meal in a microwave oven. What energy transformations occur between the microwave oven and the meal?
Electrical energy to light energy to sound energy.
Chemical energy to thermal energy to light energy.
Electrical energy to radiant energy to thermal energy.
Chemical energy to radiant energy to chemical energy.
6.9(C) Released A teacher rubbed a match against a piece of sandpaper. The match started to burn. Which statement best describes the energy changes that occurred?
The chemical energy stored in the match changed to thermal energy and light energy.
The thermal energy stored in the match changed to light energy and chemical energy.
The light energy and thermal energy stored in the match changed to mechanical energy.
The light energy and thermal energy stored in the match changed to chemical energy.
6.9(C) Released The main parts of a working clothes dryer are shown in the diagram. This appliance dries clothes primarily by converting —
electrical energy to heat and mechanical energy
mechanical energy to heat and electrical energy
electrical energy to heat and light
mechanical energy to heat and vaporization
6.8(A) Released In the classroom demonstration shown below, a rubber ball is dropped from Position 1. The ball bounces as shown. At which of these positions does the ball have both the greatest kinetic energy and the least potential energy?
Position 1
Position 2
Position 3
Position 4
What is the possible or stored energy in an object called?
Thermal energy
Kinetic energy
Chemical energy
Potential energy
How does potential energy become kinetic energy?
When something hot touches something cool, the potential energy in the hot object is turned into kinetic energy in the cool object.
When an outside force acts upon an object with potential energy, that force turns the potential energy into kinetic energy.
Potential energy becomes kinetic when an object remains in place and continues to build up more and more energy.
Potential energy has no relation to kinetic energy.
Which of the following is an example of kinetic energy?
a vase sitting on a table
sound
a plate of hot food
a parked car
What is thermal energy?
energy from sound
potential energy in chemical compounds
the movement of electrons
heat
Which of the following is an example of radiant energy?
the Sun
a car
a plate of spaghetti
knocking over a glass of water
Which one would be an example of potential energy
pencil on a desk
person running a marathon
music playing on a speaker
the Sun
Which is an example of chemical energy?
a plate of hot food
the Sun
an iron warming up
a nuclear power plant
What are the energy transformations for a flashlight?
chemical to electrical to light
electrical to mechanical to sound
sound to nuclear to light
gravitational to kinetic to electrical
Which energy transformation is shown in this picture?
chemical -----> light
light -----> mechanical
mechanical -----> chemical
chemical -----> mechanical
Which is an example of potential energy?
A child is hopping down the sidewalk.
A horse is galloping in a field.
A person is sitting on a horse.
A car is driving on the street.
Almost all energy systems produce this type of energy...
light energy
chemical energy
thermal energy
electrical energy
Which energy source can travel through empty space?
sound energy
chemical energy
thermal energy
mechanical energy
When you are outside in the summer, it is important to use sunscreen to protect your skin from the sun's rays. The sun is transferring its energy to you by which method?
conduction
convection
radiation
chemical energy
What type of energy is made by vibrations and does not travel through empty space?
sound energy
light energy
electrical energy
chemical energy
Which energy transformation below occurs in a blow dryer?
electrical ----> thermal
electrical -----> chemical
chemical -----> thermal
thermal ------> electrical
Newton's first law is also called the Law of ...
Friction
Inertia
Unbalanced forces
Newtons
Newton's first law applies
to both moving and nonmoving objects
only to moving objects
only to objects that are not moving
Because of inertia, a moving object will keep ________ unless acted on by an unbalanced force.
at rest
moving
in one spot
inertia
Find the net force: 15 N to the right, and another 15 N to the right.
0 N Right
0 N Left
30 N Left
30 N Right
8 N to the left , and 4 N to the right. Find the net force. Is this balanced?
12 N Right No
4 N Left No
12 N Right Yes
4 N Left Yes
You and your friend, are playing tug of war. Your friend pulls with a force of 55 N to the right. You pull with a force of 65 N to the left. What is the net force on the rope?
14 N, to the left
20 N
10 N, to the left
10 N, to the right
A bowling ball is rolled across the parking lot. Which statement about it is true?
the bowling ball will only stop if it strikes something
the bowling ball will never stop
the bowling ball will eventually stop because of friction
the bowling ball will eventually stop because of inertia
If the net force on an object is zero, the object will:
start moving
stop moving
change direction
there will be no change in the object's motion
*remember the definition of weight!
