Science review- heat/weather/chemical change/ force

Four solid balls, each with a different mass, are moving at the same speed. Which ball would require the most force to stop its motion? 

• ball with a mass of 5 kg 
• ball with a mass of 10 kg 
• ball with a mass of 15 kg 
• ball with a mass of 20 kg

Tags

NGSS.MS-PS2-2

This graph shows the motion of an object. Which best describes the motion of the object?

• It is sitting still.

• It is moving at a constant speed.

• It continually increases its speed.

• It travels at constant speed and suddenly stops.

Tags

NGSS.3-PS2-2

Which graph best illustrates a train sitting at the station waiting to depart?

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Joe rolls a ball to Cindy, and Cindy rolls it back to Joe at the same speed.

Which graph shows the motion of the ball as it rolls between them?

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Tags

NGSS.MS-PS3-1

Which best describes the role friction plays in the operation of a car?

• Friction makes a car go faster.

• Friction keeps a car from stopping.

• Friction turns the car in a new direction.

• Friction helps a car slow down and stop.

Tags

NGSS.3-PS2-1

Carey left a bowling ball and kickball outside on a windy day. Which best explains why the kickball moved but the bowling ball did not?

• The kickball has less mass so it was easier to move.

• The force of gravity acting on the bowling ball is greater.

• The mass of the kickball is greater so it is easier to move.

• The force of gravity acting on the kickball is greater.

Tags

NGSS.MS-PS2-2

Joe rode his bike around town. The graph below shows his position over time. Which best describes Joe’s motion between hours 1 and 2?

• He traveled 0 mph.

• He traveled 0.5 mph.

• He traveled 2 mph.

• He traveled 4 mph.

Tags

NGSS.MS-PS3-1

Carlos and Andrew decided to race each other home from school. The graph below shows the motion of the boys during the race. Which best describes the race?

• Both boys reached the finish line at the same time.

• Andrew won the race because he reached the finish line in a shorter amount of time.

• Carlos won the race because he reached the finish line in a shorter

  amount of time.

• Andrew won the race because he reached the finish line in a longer amount of time.

Tags

NGSS.3-PS2-2

Which graph depicts an object whose speed is increasing?

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Tags

NGSS.MS-PS3-1

Which is a correct statement about the object shown in Graph W?

• The object speeds up during the trip.

• The object slows down during the trip.

• The object travels at a constant speed during the trip.

• The object does not move during the trip.

Tags

NGSS.HS-PS2-1