Unit 3 Force and Motion

A student attached weights to the bottom of a spring as shown. The student measured how far the weights moved down.

What is the student most likely testing?

• How mass affects force

• How friction affects force

• How height affects force

• How volume affect force

Tags

NGSS.MS-PS2-2

The image shows an investigation being done by students in science class.

The students have been instructed to record their information into a data table. What would be a good title for their data table?

• Mass and Table Materials

• Force and Mass

• Time and Force

• Force and Table Material

Tags

NGSS.MS-PS2-2

Some students are designing an experiment to test the effect of force on an object.  The force they are testing is friction.  The students will investigate how far a car will slide when rolled across surfaces with different textures.  The cars all have equal masses. 

Which of the following experimental procedures would be the best one for the students to use to conduct the above investigation?

• First, create a ramp for each of the textures to be tested.  Make sure that all the ramps are the same height and length.  Then create a table to record your data.  Next, roll each car down each ramp three times.

• First, create a ramp for each of the textures to be tested. Then, create a table to record your data.  Next, roll each car down each ramp one time.  Measure the distance the car traveled, and record the measurement in your table.

• First, create a ramp for each of the textures to be tested.  Make sure that all the ramps are the same height and length.  Then create a table to record your data.  Next, roll each car down each ramp three times.  Each time, measure the distance the car traveled, and record the measurement in your table.

• First, create a ramp for each of the textures to be tested.  Make sure that all the ramps are the same height and length.  Next, roll each car down each ramp three times.  Each time, measure the distance the car traveled

Tags

NGSS.MS-PS2-2

A student drew a maze on a piece of cardboard. He challenged another student to maneuver a paperclip successfully through the maze to the stack of papers by moving a magnet under the cardboard.
 

According to the information and image shown above, what force was the student demonstrating?

• The pulling force of gravity

• The insulating property of cardboard

• The attractive force of magnetism

• The resisting property of friction

Some students were investigating which surfaces would allow a ball to roll the farthest.  Which of the following would be essential in their investigation?

• 4-foot-tall student, 4 1/2-foot-tall student, 5-foot-tall student, soccer ball, meter stick

• Soccer ball, bowling ball, beach ball, stopwatch, meter stick

• Grassy field, gym floor, concrete sidewalk, soccer ball, meter stick

• Stopwatch, meter stick, calculator, soccer ball, 4½-foot–tall student

Tags

NGSS.MS-PS2-2

A trebuchet can launch an object a very far distance.  When the rope is cut, the counter weight will be pulled towards the ground, causing the object on the other end of the trebuchet to launch.

A student designed an experiment to determine which type of ball would go the farthest using the trebuchet.  The student used 3 types of balls and 3 counter weights, each with a different mass.

What should the student do to improve the experiment?

• Use the same type of ball for each trial

• Use the same counter weight for each trial

• Change the length of the rope for each trial

• Use balls with different size but the same mass for each trial

Tags

NGSS.MS-ETS1-1

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Part 1. The girl in the photo above is scared to go down the slide by herself because she slides too quickly.

What changes can be made to the slide to slow down her speed?

Select all that apply

• Change the surface of the slide to concrete

• Add lubrication to the slide

• Add speed bumps to the slide

• Decrease the height of the slide

• Change the surface of the slide to a rough surface

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2

NGSS.MS-PS2-2

NGSS.MS-PS3-1

Part 2.

The girl in the photo below is scared to go down the slide by herself because she slides too quickly.

how can you prove that the new slide design is successful in slowing down the girls speed.

• When she added lubrication to the slide it caused her to slow down.

• If the girl goes slower down the slide then she has less friction.

• If the girl does an experiment by testing surfaces that have more friction, she can determine if she goes slower down the slide.

• She can prove by going down the slide face first

Tags

NGSS.MS-ETS1-2

NGSS.MS-PS2-2

Part 1. A student wanted to observe how the force of a cart rolling down a ramp would affect an object in its path.

Which forces affected the object.   

Select all that apply

• Applied Force

• Friction

• Gravity

• Magnetism

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Part 2. A student wanted to observe how the force of a cart rolling down a ramp would affect an object in its path.

How the object was affected.          

Select all that apply

• The object was affected by a pushing force

• The object was affected by a pushing force causing a change in position and direction

• The object was not affected. The car went through the object.

• The object was affected by a pushing force causing it to move and friction to slow the object back down.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2