What type of force needs objects to touch each other?

• Contact force

• Magnetic force

• Gravity

• Electric force

• Wind force

When you push a toy car on a rough floor, what makes it stop?

• Gravity

• Friction

• Wind

• Magnetism

• Electricity

Tags

NGSS.MS-PS2-2

If you drop a heavy ball and a light ball at the same time, which will hit the ground first?

• Heavy ball

• Light ball

• They hit at the same time

• Neither will fall

• Depends on their color

Tags

NGSS.MS-PS2-4

What force pulls everything toward the center of the Earth?

• Magnetic force

• Electric force

• Gravity

• Wind force

• Friction

Tags

NGSS.MS-PS2-4

Which surface has the most friction?

• Smooth ice

• Wet floor

• Rough sandpaper

• Smooth glass

• Polished table

When you kick a ball, what kind of force are you using?

• Magnetic force

• Electric force

• Contact force

• Gravity

• Wind force

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

What happens when you rub your hands together?

• They get cold

• They get warm from friction

• They become magnetic

• They produce electricity

• Nothing happens

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4

Which object will fall faster in air?

• A flat piece of paper

• A crumpled paper ball

• They fall at the same speed

• Neither will fall

• It depends on the color

What makes a swing move back and forth?

• Electricity

• Magnetism

• Push force and gravity

• Wind only

• Heat

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

How can you increase friction?

• Make surfaces smoother

• Add oil

• Make surfaces rougher

• Add water

• Remove weight