6th Grade Force & Motion/ Simple Machines Quiz

Gordon is making a list of forces for his science class. Which of the following should Gordon not list as a force?

• gravity

• friction

• a push or pull

• mass

Some forces require direct contact, while others, like gravity, act at a distance. Which of the following is not influenced by gravity?

• Earth's tides

• Your weight

• Earth's orbit

• Magnetism

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Luis rubbed a balloon on his hair and held the balloon next to the wall. He observed the balloon stick to the wall. Which of the following is responsible for the balloon sticking to the wall?

• friction

• electric force

• gravity

• magnetic force

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As an object falls towards the Earth, what is true about the gravitational potential energy?

• it will increase

• it will decrease

• it will stay the same

• depending on the mass of the object, it will either increase or decrease

Which simple machine is the best choice for pushing a fallen boulder off a roadway?

• inclined plane

• lever

• screw

• wheel and axle

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Which simple machine is used to move elevator cars?

• screw

• inclined plane

• lever

• pulley

Ben wants to open a lid. Which should he use as a lever other than bottle opener?

• screwdriver

• pulley

• clothesline

• woodscrew

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A V-shaped simple machine made up of two inclined plane is a

• screw

• wedge

• pulley

• fulcrum

Why use simple machines?

• they make work harder to do

• they make work easier to do

• they're fun

• they give you a work out

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How many simple machines are there?

• 3

• 6

• 9

• 12