Simple machines

How many types of Simple machines are there?

• 2

• 4

• 6

• 12

How many vertebrea are there in the image shown?

• 33

• 45

• 76

• 1

What is a wedge?

• Is a tilted surface or a slope used to move a heavy load.

• Is a simple machine which is a modified inclined Plane that winds around a cylindrical core to form a spiral.

• Is two inclined Planes held back to back against each other.

Which of the following is not a Examples of wheel and Axle.

• screwdriver

• Doorknob

• Cycle

• window blinds

Which bone protect the brain?

• Cranial bones

• Facial bones

• Ribcage

• Backbone

How many bone are there in skull?

• 22

• 34

• 11

• 120

What are the last two bones called in the ribcage.