Six Simple Machines

Question 1

1st class lever

Answer 1

input force first
middle fulcrum
output force at the end
example: seesaw

Question 2

2nd class lever

Answer 2

first fulcrum
second output force
third input force
example: nutcracker

Question 3

3rd class lever

Answer 3

first fulcrum
second input force
third output force
example: broom

Question 4

what is an inclined plane

Answer 4

flat and sloped machine that helps to move things

Question 5

what is a screw?

Answer 5

an inclined plane wrapped around a cylindrical center

Question 6

what is a wheel and axle?

Answer 6

a wheel attached to an axle and they rotate together

Question 7

what are gears?

Answer 7

modified wheel and axle

Question 8

what is a wedge?

Answer 8

two inclined planes pasted together is sharp (always cuts something)

Question 9

what is a pulley?

Answer 9

a wheel with a rope

Question 10

fixed pulley

Answer 10

normal pulley

Question 11

movable pulley

Answer 11

you can move it

Question 12

pulley system

Answer 12

movable and fixed pulleys together

Question 13

mention the six simple machines

Answer 13

lever, wedge, screw, inclined plane, wheel and axle, and pulley