Vocabulary
Motion
Forces
Forces and Motion
100
A push or pull on something.
What is force?
100

The tendency of an object to resist a change in motion.

What is intertia?

100

Mrs. Kunkel rolled a marble across the floor to Mrs. Plummer What force started the ball rolling? (balanced force, unbalanced force, gravity, friction)

What is an unbalanced force?

100

Which of the following is an example of balanced forces? A. Sitting on a chair B. Kicking a soccer ball C. An apple falling onto the ground D. A rocket taking off

What is A - Sitting on a chair

200
Force that acts on an object when it rubs against another object or material.
What is friction?
200

Which will experience less acceleration when the same force is applied, a 100lb object or a 25lb object?

What is an unbalanced force?

200

This is the force that acts on a space shuttle as it accelerates toward Earth.

What is gravity?

200

Which of the following forces slows objects down?

A. Friction B. Gravitational C. Magnetic D. Unbalanced

What is Friction

300
A force that requires two pieces of matter to touch.

What is contact force?

300

Which will experience more acceleration when the same force is applied, a 10kg object or a 5kg object?

What is the 5kg object?

300

Friction is a force caused by___________.

What is surfaces rubbing against one another?

300

The first part of Newton's First Law of Motion states: An object ___ ______ tends to _____ ____ ____ unless acted upon by an ________ _______.

What is at rest, remain at rest, and unbalanced force?

400

distance divided by speed 

What is time?

400

What is needed to give a boulder acceleration?

A large force that changes the boulders speed/direction.

400

Jackson was investigating the use of magnets to move objects. He observed that some objects moved toward the magnets without having to touch them. Jackson's observation can be described by saying that the magnets have what type of force?

What is non-contact force?

400

The second half of Newton's First Law of Motion states: An object in _______ in a straight line tends to ______ _____ _______ in a straight line unless acted upon by _____________ __________.

What is motion, stay in motion, another force (or outside force)?

500
This exists when all the forces acting on an object result in the object staying at rest or moving at a constant speed in the same direction.
What is balanced force?
500

Fill in the blank: For ______ to occur on this object, a force must act upon it.

What is motion

500

Mrs. Kunkel's 5th grade class and Mrs. Plummer's 6th grade class challenged each other to a game of tug-of-war. Each class grabbed onto different ends of the long rope. Mrs. Plummer blew a whistle and both teams began to pull and pull. Neither team could pull the other team over. Give a statement about the forces involved in the tug-of-war between the two 5th grade classrooms. "The forces were ___________ because _______________."

What is (something like) "the forces were balanced because the teams could not pull each other over"?

500

You can describe an object sitting at rest on the ground as follows: The ______ of the object on the ground is _________ with the ________ of the ground on the object.

What is force, balanced, and force?

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