Force Basics
Buoyancy and Friction
Gravity and Magnetic Force
Muscular Force and Static Electricity
Contact/Non-Contact Forces, Erosion, and Safety Devices

100

A force is defined as a ________ or a _______.

push or a pull

100

Does buoyancy always push upwards or downwards?

Upwards

100

Snow falling is an example of what force...

Gravity

100

When our body uses pushes or pulls to move objects, we are using this type of force.

Muscular force

100

Pushing a toy car is an example of a _________ force and magnets repelling is an example of a _________ force.

contact and non-contact

200

Give an example of a push

Kicking a soccer ball

200

Friction is created when two surfaces _________________

rub against each other

200

Why are people lighter on the moon than they are on Earth?

The force of gravity is stronger on Earth than on the moon.

200

When you rub a balloon in your hair and try to stick it to the wall, why does it stick?

Rubbing it in your hair caused it to have static electricity.

200

What is one positive thing and one negative thing about wearing helmets

Prevents injuries, expensive

300

Give an example of a pull

Pulling a chair out from the table

300

Does friction make objects speed up or slow down?

Slow down

300

When two magnets stick together, we say that there is an _______________.

attraction

300

What happens when you decrease the amount of force you are using to throw a ball with?

The ball will travel slower and not go as far.

300

What are two positive and two negative things about wearing seatbelts.

Answers will vary

400

Name the 6 forces studied this term,

Buoyancy, magnetic force, muscular force, friction, gravity, and static electricity

400

How much friction will two rough surfaces rubbing together cause?

A lot of friction

400

What happens when the north pole of one magnet is facing the north pole of another magnet?

The magnets will repel

400

Name one action that uses very little muscular force and one action that uses a lot of muscular force.

Blinking, lifting weights

400

What causes soil erosion?

Answers will vary

500

Give an example of something that uses both a push and a pull

Door

500

When a ping pong ball is placed underwater, why does the water level rise?

The ping pong ball is taking up space in the water, so the water has to go somewhere.

500

If a pencil and a textbook are dropped from the same height at the same time, which one will hit the ground first and why?

The textbook because it is heavier

500

What is static electricity?

A pushing or pulling force that is caused by a difference in charged particles.

500

What can be done to prevent soil erosion?

Answers will vary