Hansen 4th Grade Science Unit 6 Force & Motion and Simple Machines Vocabulary

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A simple machine made up of a wheel with a rope, cord, or chain around it.

• screw
• pulley
• lever
• wheel and axle

The use of a force to move an object over distance is called ____________________.

• friction
• gravity
• pushing
• work

A screw is a simple machine made of a post with a/an _________________ wrapped around it.

• lever
• wedge
• inclined plane
• fulcrum

Newtons are the unit of measure used to measure _________________.

• force
• work
• simple machines
• levers

Something that does work using only one movement is called a _______.

• Newtons
• force
• inclined plane
• simple machine

The force of attraction between two objects is...

• gravity
• friction
• force
• movement

Forces that change an object's motion because they do not cancel each other out are _______________ forces.

• balanced
• strong
• weak
• unbalanced

What is the balance point of a lever that supports the arm but does not move?

• lever
• pulley
• screw
• fulcrum