Type of Friction
A push or a pull is called a ___________________.
force
If the net force equals zero, is it balanced or unbalanced?
balanced
A force of attraction between objects that is due to their masses is called ______________________.
gravity
True or False. The sun's gravitational force keeps the planets in their orbits.
True
Name the type of friction. You are roller skating down the street.
Rolling Friction
Friction is a force that acts _____________ the motion of an object. Choices: a) against b) in the same direction as
against
If there is movement, is the force balanced or unbalanced?
unbalanced
True or False. Only some matter experiences gravity.
False. All matter experiences gravity.
Are paper clips magnets?
Paper clips are not magnets but they do stick to magnets. They can become magnetized by coming into contact with magnets. The paper clips that are touching can pick up other things made of iron and will stay magnetized for a short time.
Sandpaper sliders don't slide very fast because_____.
sandpaper creates a lot of friction.
The last rubber band caused the watermelon to burst because__________?
It created force that was greater than the force of the watermelon rind.
The Indigo and the Navy Teams are having a tug of war. The Navy Team pulls with little force and the Indigo Team pulls with a little force. Is it balanced or unbalanced?
Unbalanced
Why was a suspension bridge a good design for the Golden Gate Bridge in San Francisco?
Ships had to pass underneath the bridge.
True or False. There is no gravity on the moon.
False. There is gravity on the moon. It is less than the amount of gravitational force on the Earth.
Name the type of friction. Sledding down a hill
Sliding Friction
The unit used to label force is called ________________.
Newtons
You and your brother are moving a couch for your mom. You move the couch a great amount of force and your brother moves the couch with a small amount of force. Is the net force balanced or unbalanced?
Unbalanced
True or False. If objects move farther apart their gravitational force is decreased.
True. (For example, the sun is so far away from us that it doesn't affect us as much as the gravitational pull of the Earth.)
_________________ is the measure of the gravitational force exerted on an object.
Weight
If you wanted to go down a slide faster, what are some things you could do?
Make the slide more slippery. Wear slippery close. Ride on slippery material. All of those things mke the friction force less strong. So the pull of gravity would bring you down the slide faster.
The combination of forces on an object is called the _____________________________.
Net force
You are having a tug of war with your puppy. You are pulling the rope with the same force as your puppy . Is it balanced or unbalanced?
Balanced
Magnets attract___.
objects that contain iron.
If a person weighs 600 Newtons on the Earth. What is his weight on the moon?
100 Newtons (Divide by 6 to get your answer)