LockeD! - 5.6D - Forces and Motion #1

A student uses a spring scale to pull a 50-gram block horizontally across a wood desk. Then the student pulls the block the same distance across surfaces of carpet, sandpaper, and glass. Which question is this investigation most likely designed to answer?

• How do block of different sizes react to force?

• How do different surfaces affect the amount of force needed to move a block?

• How do blocks affect spring scales?

• How does the mass of a block change when it is pulled across a desk?

Tags

NGSS.MS-PS2-2

Students placed two identical toy cars on these wooden ramps. The students let the cars roll down the ramps. This experiment most likely tests the hypothesis that -

• ramps made of wood make cars roll faster

• the height of the ramps affects the speed of the car

• the speed of the car is determined by tire size

• plastic cars travel faster than metal cars

Tags

NGSS.3-PS2-1

NGSS.3-PS2-2

What causes these cars to move down the ramps?

• Electricity

• A force that pulls

• Magnets

• A force that lifts

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

some students attach a balloon to a straw and then tape the straw to the top of a toy car. The students inflate the balloon and release the car. The car travels 40 centimeters across the floor. What should the students do to determine whether the force of the air from the balloon is enough to push the car 40 centimeters across the same floor in repeated trials?

• Test the car several times using an identical balloon filled with different amounts of air

• Test the car several times using different-sized balloons filled with the same amount of air

• Test the car several times using an identical balloon filled with the same amounts of air

• Test the car several times using different-sized balloons filled with different amounts of air

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-3

NGSS.MS-PS2-2

A student has one 15 gram ball and one 60 gram ball. She sets the balls in the starting positions shown below. A fan is used to blow air towards the balls. The fan is turned on at medium speed. In 2 seconds, the 60 gram ball rolls to Position A. How will the motion of the 15 gram ball compare to the motion of the 60 gram ball?

• The two balls will probably rool the same distance in 2 seconds.

• The 60 gram ball will probably roll farther than the 15 gram ball in 2 seconds.

• The 15 gram ball will probably roll farther than the 60 gram ball in 2 seconds.

• The 15 gram ball will probably not roll at all.

Tags

NGSS.MS-PS2-2

Which experiment listed below will best determine how friction affects the speed of a rolling object?

• Roll 3 objects of various sizes across the floor

• Roll 3 objects of equal size from various heights across the floor

• Roll 3 objects of equal size across 3 different types of surfaces

• Roll 3 objects of equal size from equal heights across the floor

Tags

NGSS.MS-PS2-2

A science class wanted to know if an empty wagon and a wagon full of books would roll down a ramp at the same speed. Which of the following shows a fair test?

• 
• 
• 
• 

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

A system is a group of parts that work together for a common function. What will happen to the book if the teacher pushes down on the ruler in the system pictured?

• The book will remain in exactly the same position.

• The teacher will not be able to move the ruler.

• The edge of the book on the ruler will rise.

• The book will slide off the end of the table.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

A student drops a ball from shoulder height. What force causes the ball to fall to the ground?

• Electricity

• Friction

• Gravity

• Magnetism

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

More friction occurs when an object rubs against—

• a smooth surface

• a wet surface

• an icy surface

• a rough surface