Show:
forces and motion
work
machines
mixed
100
a push or a pull
What is a force?
100
It takes more force to move a bowling ball than a basketball because the bowling ball has more of this.
What is mass?
100
A tool that helps people do work.
What is a simple machine?
100
The measure of how fast something moves over a certain distance.
What is speed?
200
A change in position is called
What is motion?
200
When a force moves an object, scientists say _______is done.
What is work?
200
A bar that moves on or around a fixed point.
What is a lever.
200
Several simple machines put together.
What is a compound machine?
300
The only human-made objects to overcome gravity and leave the earth's atmosphere.
What is a rocket?
300
An example of a force that doesn't cause motion.
What is pushing on a wall or other object that doesn't move?
300

the point on which a lever rests or is supported and on which it pivots

What is a fulcrum?

300

Which force gives your body weight?

Earth's Gravity

400
The force that pulls objects toward each other
What is gravity?
400
You must multiply the force needed to move the object by the distance the object moves.
What is figuring out how much work is done?
400
A flat surface set at an angle to another surface.
What is an inclined plane?
400

You live on top of a hill.  Which simple machine is similar to the road to her house?

pulley, screw, wedge or inclined plane


inclined plane

500
The measure of the pull of gravity on an object.
What is weight?
500
The amount of work you do when you push a wheelbarrow 5 meters using 4 newtons of force.
What is 20 newton-meters of work?
500
the simple machine used to raise and lower a flag.
What is a pulley?
500
a wheelchair ramp
What is an expamle of an inclined plane?