Examples of Energy
All of the following objects produce sound energy EXCEPT –
A a radio.
B a drum.
C a flashlight.
D a television.
A flashlight!
Rapid movement back and forth.
Vibration
The pull of gravity
Give an example of doing work.
Examples include:
Closing/Opening a door.
Pushing a box.
Pulling a wagon.
A pushing or pulling force produced by a magnet is known as-
Magnetism
When students look at a computer screen, they are using what kind of energy produced by the screen?
light energy
What is needed to do work or cause change.
All of the actions below would probably move a book EXCEPT –
A standing on top of the book
B pushing the book off a table
C pulling a rug that the book is on
D kicking the book across the floor
Standing on top of the book
A student rolls a ball down a ramp. What direction will the ball roll?
Straight down a ramp.
What force makes the needle of a compass point north?
Magnetism
Electricity
Friction
Gravity
Magnetism
Turning the handle of the pencil sharpener to sharpen a pencil is an example of using —
Mechanical Energy
A push or pull that causes an object to move, stop, or change direction.
Force
I have a wagon with 25 pounds of books. I have another wagon with 30 pounds of books. Which wagon would take MORE force to pull?
The wagon with 30 pounds of books.
A student makes a swing move by pushing it. If the student pushes the swing harder, the swing will most likely —
Go higher
Two balls roll together. They hit each other. The balls will change –
DIRECTION
What type of energy does an oven produce to bake a cake?
Thermal/Heat energy
To use force to cause something to move closer
Pull
I throw a ball up in the air. Because of the rule of gravity, what will happen to the ball?
It will come back down!
Pushing or pulling a wagon changes its —
position and motion
Which forms of energy are used to cause the change in a roller coasters’ MOVEMENT?
Mechanical and Electrical
What type of energy bounces off a mirror and allows you to SEE your reflection?
Light Energy
To use force to move away
Push
A marble started a 0 cm. Then it moved 7 cm. How do I know that work has been done?
The marble was pushed.
A push or a pull changes an object’s –
A size.
B motion.
C weight.
D temperature.
Motion
Heat energy flows from ___________ objects to ___________ objects.
Warmer to cooler.