Machine Detective
I use a bar and a fixed point to help lift something heavy.
What is a lever?
This machine helps you lift a heavy object by using a bar that moves on a fixed point. How does it help?
It reduces the effort needed to lift.
You need to lift a heavy rock using a long stick and a small support under it. What machine would you use?
Lever
A worker needs to move a heavy box into a truck. First, they use a ramp. Then, they use a crowbar to lift one side of the box to adjust it.
Name TWO simple machines being used AND explain how each one helps.
I am made of two slanted surfaces put together and I can split wood.
What is a wedge?
This machine has a sharp edge that pushes materials apart when force is applied. How does it help?
It cuts or splits objects.
You want to cut through a piece of wood or split it into two parts. What machine would you use?
Wedge
What would make the ramp easier to use?
Make it longer / less steep
You don’t lift straight up when using me—you push along a slope instead.
What is an inclined plane?
Instead of lifting straight up, this machine lets you push an object over a longer distance. How does it help?
It uses less force to move objects.
You need to push a heavy box into a truck without lifting it straight up. what machine would you use?
Inclined Plane