Forces

All of these are moving in the direction of the pull of gravity EXCEPT...

• a rollercoaster going down a hill
• a helium balloon rising into the sky
• rain falling from the sky

Throwing a ball and moving a chair are an example of 

• pushes
• pulls
• gravity
• weight

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

When a force pushes an object, the object moves

• in the opposite direction of the force.
• in the same direction as the force.
• It would not move at all.

Tags

NGSS.MS-PS2-1

What happens when you join the North pole of one magnet with the North pole of another magnet?

• They attract each other.
• They repel each other.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Work does NOT require movement.

• True.
• False.

An example of a push would be

• hammering a nail into a piece of wood.
• spinning a hammer on the floor.
• yanking a nail out of the wood.
• cutting a nail with sharp scissors.

Tags

NGSS.MS-PS2-2

Why does it require less force to throw a paper plane than a baseball?

• The paper plane is heavier than the baseball.
• The paper plane is lighter than the baseball.
• The paper plane is not round and the baseball is.
• The paper plane is bigger than the baseball.

Tags

NGSS.MS-PS2-2

Applying force on an object with your body is an example of...

• motion caused by gravity.
• motion caused by magnetism.
• motion caused by physical force.

Tags

NGSS.MS-PS2-2

What happens when two magnets are attracted to each other?

• Their magnetic fields get bigger.
• They come closer together.
• They push away from each other.
• They point to the North Pole.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Which of the following actions would enable you to move a book from one position to another?

• Kicking the book across the floor.
• Standing on top of the book.
• Putting it on the shelf.
• Reading it for 30 minutes.