# NCSCOS Grade 7 Science - 7.P.2.4 Simple Machines

## Quiz by NCDPI

Science
North Carolina Standard Course of Study

### Our brand new solo games combine with your quiz, on the same screen

Correct quiz answers unlock more play!

10 questions
• Q1
Which tool will best help in separating the peel from potatoes?
wheel and axle
lever
wedge
30s
7.P.2.4
• Q2
What will happen if a moving object is not affected by an unbalanced force?
The object will change direction and slow down.
The object will not change direction, but it will slow down.
The object will not change direction and continue moving at the same speed.
30s
7.P.2.4
• Q3
How does a pulley system in a crane make work easier?
The pulley system reduces the amount of force needed to lift an object.
The pulley system reduces the distance the object being lifted needs to move.
The pulley system reduces the mass of the object being lifted.
30s
7.P.2.4
• Q4
Which simple machine uses a fulcrum to redirect a force?
Wedge
Incline Plane
Lever
30s
7.P.2.4
• Q5
Which statement describe the effort force if a 300 N bag of soil is added to the wheelbarrow?
The effort is less than load.
30s
7.P.2.4
• Q6
Which statement describes the force on the crowbar and the motion of the lid when a person is removing the lid from a crate with a crowbar ?
As the crowbar is pushed down, the lid moves up.
As the crowbar is pulled up, the lid moves down.
As the crowbar is pulled out, the lid moves up.
30s
7.P.2.4
• Q7
Which simple machine increases the distance over which a load travels and reduces the needed force?
inclined plane
wheel and axle
pulley
30s
7.P.2.4
• Q8
How does a pulley help make work easier?
It pushes materials apart
It reduces friction.
It redirects the force.
30s
7.P.2.4
• Q9
Marissa is trying to move a heavy box into the back of a moving truck. Which of the following simple machines would help her complete this task?
inclined plane
wedge
screw
30s
7.P.2.4
• Q10
Which machine could be considered to be a type of inclined plane?
wheel and axle
screw
lever
30s
7.P.2.4

Teachers give this quiz to your class