5.P.1.1

Which of the following best describes friction? (5.P.1.1)

• A force that pulls objects toward the ground.

• A force that pulls two objects apart.

• A force that makes an object move faster.

• A force that is created when two objects move across each other.

Water flows down the side of a mountain. Which of the following causes water to flow down the sides of mountains and hills? (5.P.1.1)

• gravity

• friction

• speed

• direction

Tags

NGSS.5-PS2-1

Which of the following statements best explains why it can be dangerous to drive a car on an icy road in the winter? (5.P.1.1)

• Ice increases the force of gravity acting on a car.

• Ice increases the mass (weight) of a car.

• Ice reduces the friction between the car’s tires and the road.

• Ice reduces the speed of the car.

Bruce rolls a ball down a smooth, wooden ramp and observes the motion of the ball. Then he places sandpaper on the ramp. Next, he rolls the same ball down the ramp covered with sandpaper and observes the motion of the ball. What is Bruce most likely trying to understand?

• He is investigating if a change in direction affects the motion of the ball.

• He is investigating if a change in gravity affects the motion of the ball.

• He is investigating if a change in mass affects the motion of the ball.

• He is investigating if a change in friction affects the motion of the ball.

Tags

NGSS.3-PS2-1

Four baskets are filled with different loads of toys. Which basket will require the least amount of force to make it move? (5.P.1.1)

• The basket that has a mass of 30g

• The basket that has a mass of 10g

• The basket that has a mass of 35g

• The basket that has a mass of 15g

Tags

NGSS.3-PS2-1

A pencil rolled to the edge of the table then fell to the floor. Which force pulled the pencil toward the ground? (5.P.1.1)

• speed

• gravity

• friction

• mass (weight)

Tags

NGSS.3-PS2-1

NGSS.5-PS2-1

A wagon is pushed in a straight line. How would an increase in friction on the wagon wheels affect the wagon?

• It would cause the wagon to move faster.

• It would cause the wagon to change mass.

• It would cause the wagon to change direction.

• It would cause the wagon to slow down.

Tags

NGSS.3-PS2-1

NGSS.3-PS2-2

Which best explains why a bicycle slows down when its brakes are applied?

• The brakes heat the rubber on the bicycle tires.

• The brakes add energy to the bicycle.

• The brakes increase the force of gravity on the bicycle.

• The brakes cause frictional forces on the wheels of the bicycle.

Tags

NGSS.3-PS2-1