Invisible Forces Review

What was special about the last rubber band, before the watermelon burst?

• It was stronger than the other rubber bands

• It was thicker than the other rubber bands

• It was the last rubber band in the bag

• It created a force that was greater than the force of the watermelon rind

Tags

NGSS.MS-PS2-1

Why is it hard to win a tug-of-war against a bunch of teachers?

• Teachers try really hard

• Teachers have more legs than students

• Teachers have more friction than students

• Teachers can push and pull harder than students

Tags

NGSS.MS-PS2-2

What is a force?

Tags

NGSS.MS-PS2-2

Why is an arch and pillar bridge stronger than a board bridge?

Tags

NGSS.MS-ETS1-2

Why was the suspension bridge a good design for the Golden Gate Bridge in San Francisco?

• Ships needed to pass under the bridge

• It has a lot of pillars underneath to support it

• The distance the bridge had to cross was short

• The water under the bridge is shallow

Tags

NGSS.MS-ETS1-1

Imagine a student sliding down a slide. If the force of friction is greater than the force of gravity, what will happen to the student?

• The student will not move on the slide

• The student will slide down

• The student will slip off the slide

• The student will jump off the slide

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Sandpaper sliders don't slide very fast because...

• sand makes the slider heavier

• sandpaper creates a lot of friction

• it didn't have enough pennies on it

• the slide isn't long enough

Tags

NGSS.MS-PS2-2

Magnets attract ___________.

• objects that contain iron.

• only other magnets

• anything made out of metal

• things that are not too heavy

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

If you wanted to go down a slide faster, what could you do?

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

NGSS.MS-PS3-1

Are paper clips magnets? Why or why not?

Tags

NGSS.3-PS2-3