Science OSTP

In the picture above, a boy is trying to pull a dog on a leash, but the dog and the boy are moving in the same direction.  Which of the following best describes the forces in this situation?

• The forces are balanced, and the net force is zero.
• The forces are unbalanced, and the boy’s force is greater.
• The forces are unbalanced, and the dog’s force is greater.
• The forces are balanced, and the dog is stronger than the boy.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

A boy pushes on a parked car with a force of 200 N. The car does not move. How much work does the boy do on the car?

• 200 N
• 200 J
• zero
• can't be determined

 Which of the following processes requires the most work?

•  A 10 kg weight rests on a table.
• A person holds a 1 kg weight still with outstretched arms.
• A person lifts a 100 kg weight 1 m off the floor.
•  A 1 kg ball is rolled across the floor at a constant speed for a distance of 10 m.

Tags

NGSS.HS-PS2-1

The upward force on an object falling through the air is ____.

• air resistance
• Inertia
• gravity
• terminal velocity

Tags

NGSS.MS-PS2-5

The graph shows the distance traveled by a vehicle over a certain period of time. Which   segment of the graph shows the vehicle moving with the greatest speed?

• L
• M
• N
• O

Tags

NGSS.MS-PS3-1

The table above shows experimental data collected when four cars moved along a straight-    line path. According to the data which car moved with a constant acceleration of 2 m/s²?

• Car Q
• Car R
• Car S
• Car T

Tags

NGSS.HS-PS2-1

 Which graph represents an object at rest?

• F
• G
• H
• J

Tags

NGSS.MS-PS3-1

A group of students found igneous rocks near a campsite.  The presence of igneous rocks is most likely evidence of 

• deposition of sediments
• past volcanic activity
• erosion of surface rocks
• heat and pressure

Tags

NGSS.MS-ESS2-1

Which of the following is TRUE about when mountains have developed on earth?

• All mountains on earth today were present when the earth formed. 
• Mountains have been developing continuously since the earth formed and mountains are still developing today.
• Mountains have developed since the earth formed, but only occasionally.
• Mountains developed for a while after the earth first formed, but no new mountains are developing today. 

Tags

NGSS.MS-ESS2-2

Plate A and Plate B represent what type of plate boundary? 

• Transform Fault Boundary
• Convergent Boundary
• Divergent Boundary
• Sea Floor Spreading

Tags

NGSS.MS-ESS2-3