Davin and Christian are racing side-by-side on identical Razor scooters. Christian starts applying more force with his push-off foot. What is MOST LIKELY going to happen next?

• Christian is increasing the gravity applied to his scooter
• Christian is allowing friction to slow him down
• Christian is starting to go faster than Davin
• Davin is getting tired

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Daisy put the north pole of a magnet near the south pole of a magnet.  What MOST LIKELY happened next?

• the magnets attracted each other
• the magnets flipped over
• nothing happened
• the magnets repeled away from each other

Tags

NGSS.MS-PS2-5

Study the picture. Replace the question mark (?) with the amount of force needed to cause the book to move to the left <---. (Click on the question to see the picture better.)

• 15 N
• 20 N
• 5 N
• 10 N

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Four identical carts were moved the for the same amount of time. Stacey pushed her cart with the least amount of force. Gus pulled his cart with 4 times more force than Stacey.  Cesar pulled his cart with 7 times more force than Stacey.  Omar pushed his cart with 10 times more force than Stacey.  Who's cart moved the FARTHEST?

• Cesar's
• Omar's
• Stacey's
• Gus's

Tags

NGSS.MS-PS2-2

Mr. Coffman was walking with some papers and he dropped them on the floor.  (What a klutz!) What force caused them to fall to the ground?

• Earth's gravity pulled them to the floor
• Mr. Coffman pushed them down to the floor
• Mr. Coffman pulled them down before he let go
• the force of friction in the air moved them downward

Tags

NGSS.MS-PS2-4

Which of the following would need the GREATEST amount of force to put it in motion?

• a bike
• a NASA rocket
• a car
• a train

Tags

NGSS.MS-PS2-2

Joseph pushed 15 kg of toys in a box across the floor for 10 seconds. Then he unloaded 5 kg of toys from the box.  Then he pushed the box again for 10 seconds. What would you expect to happen? 

• the 10 kg box moved farther than the 15 kg box
• the box moved the same distance both times
• the 15 kg box moved farther than the 10 kg box
• the boxes didn't move at all

Tags

NGSS.MS-PS2-2

Luke put the south pole of a magnet near the south pole of another magnet. What most likely happened next?

• the magnets attracted toward each other
• the magnets did nothing 
• the magnets repeled each other
• the magnets flipped over

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Jenny tried to lift a bowling ball while at the bowling alley with her friends. But the bowling ball did not move from the rack.  What is the best explanation for this?

• Jenny needs to work out
• friction kept the ball from moving
• Jenny's force was not enough to overcome the force of gravity on the ball
• the forces acting on the ball were unbalanced

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

Tony was on his roof to repair a hole.  While he was working he dropped his hammer and it slid down the rough shingles to the edge of the roof, but stopped before falling off. What best explains why the hammer stopped?

• the force of gravity pushed up on the hammer
• the force of friction from the shingles slowed the momentum of the hammer and stopped its motion 
• the hammer was too light to fall off the roof
• the force of friction overcame the mass of the hammer

Tags

NGSS.MS-PS2-2