Simple Machines

How do simple machines change human work?

• They require less effort force

• They make it easier

• They make it harder

• They require more effort force

Tags

NGSS.MS-PS2-1

Draw a Single Fixed Pulley

Tags

NGSS.MS-ETS1-1

Which number shows a lever?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS2-2

Which 2 show forms of inclined planes?

• 1 and 2

• 2 and 4

• 2 and 3

• 3 and 4

Tags

NGSS.MS-ETS1-1

Draw a Moveable Pulley

Tags

NGSS.MS-ETS1-1

NGSS.MS-PS2-1

NGSS.MS-PS2-2

If you wanted to make lifting the rock in #2 easier, what could you do?

• Move the fulcrum toward the man

• Move the fulcrum toward the rock

• Make the board longer on rock's side of fulcrum

• Make the board longer on man's side of fulcrum

Tags

NGSS.MS-ETS1-1

NGSS.MS-PS2-1

NGSS.MS-PS2-2

NGSS.MS-ETS1-2

Which simple machine only changes the DIRECTION of force?

• 1

• 2

• 3

• 4

One benefit provided by the machine shown in the diagram is that it

• Increases the amount of the force

• Reduces friction

• Reduces effort force

• changes the direction of the force

Tags

NGSS.MS-ETS1-1

Effort force is measured in _______?

• Pounds (Ib)

• Newtons (N)

• Inches (In)

• Volume

No matter how hard Jack pushed, the refrigerator wouldn't budge. What is the BEST explanation of what happened?

• Jack exerted a force and did work

• Jack had no energy and did no work

• The refrigerator didn't move so no work is done

• Jack used all his potential energy to do work

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2