Put to Work
This simple machine is a sloped surface used to raise objects.
An inclined plane.
This is the act of changing position from one place to another.
Motion
This is the speed of an object at any given moment.
Instantaneous speed
This scientist is known for his three laws of motion.
Sir Isaac Newton
Draw and label a first-class lever.
The fulcrum should be in the middle. Possible example is a seesaw.
This machine has a wheel attached to move a heavy object. (Double points if you can name a version of this that is attached to something that does not move)
A pulley
(A fixed pulley)
This force opposes motion when two surfaces rub together.
Friction
What is the formula for average speed?
Total distance divided by total time.
What is the first law of motion?
An object at rest tends to stay at rest/ An object in motion tends to stay in motion unless acted on by an unbalanced force.
Draw and label a second-class lever.
The resistance/ load should be in the middle. Possible example is a wheelbarrow.
This machine is made of more than one pulley.
A block and tackle
This is the change in speed of an object.
Acceleration
This is the amount of matter in an object.
Mass
What is the second law of motion?
Force = mass times acceleration. Acceleration happens when a force acts on a mass. The greater the mass, the greater the force needed.
Draw and label a third-class lever.
The effort should be in the middle. Possible example is a rake.
A screw
This is the tendency of an object to stay at rest or keep moving.
Inertia
This is the metric unit of mass.
Kilogram
What is the third law of motion?
Every action has an equal and an opposite reaction.
A machine that makes an object feel lighter has a mechanical advantage of
Greater than 1
Name the six simple machines.
Pulley, lever, inclined plane, wedge, screw, and wheel & axle.
This is the force of attraction between two objects.
Gravity
This changes depending on location, unlike mass.
Weight
A skater loses control and runs into a park bench. He bounces back and lands on the ground. Which law of motion explains why this happened?
The third law of motion.
A machine that makes an object feel heavier has a mechanical advantage of
Less than 1