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Which is needed to determine the amount of gravitational force between two objects?

• distance and mass

• weight and time

• area and weight

Tags

NGSS.MS-PS2-4

Gordon is making a list of forces for his science class. Which of the following should Gordon not list as a force?

• Gravity

• Friction

• Push or Pull

• Mass

Forces that act at a distance include electrical force and gravitational force. What other type of force acts at a distance?

• Friction

• Contact Force

• Magnetic Force

• Conduction

Tags

NGSS.MS-PS2-5

The north pole of one magnet will be attracted to the __________ pole of another magnet.

• east

• north

• south

• west

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

What will happen if you try to put the south pole of one magnet and the south pole of another magnet together?

• attract

• repel

• both attract and repel

• neither attract nor repel

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-5

The gravitational force between two objects changes with the distance between the two objects

• True

• False

Remember that speed = distance / time. If an object is moving at a constant speed of 3 meters/second, how far will this object travel in 4 seconds?

• 6 meters

• 9 meters

• 15 meters

• 12 meters

An asteroid is flying through space at a constant speed. Which statement below correctly describes the motion of the asteroid?

• Each day, the asteroid travels the opposite direction of the previous day.

• Each day, the asteroid travels the same distance it did the previous day.

• Each day, the asteroid travels farther than it did the previous day.

• Each day, the asteroid travels less than it did the previous day.

Kalinda did an experiment to study motion. She then prepared the blank graph below to plot her results. Kalinda discovered that the object moved 20 meters (m) after 2 seconds (s), so she plotted her first data point as shown on the graph above. She also discovered that the object moved at a constant speed. Which of the following data points should Kalinda correctly plot next on her graph?

• 40 meters, 4 seconds

• 50 meters, 6 seconds

• 30 meters, 5 seconds

• 40 meters, 3 seconds

Tags

NGSS.MS-PS3-1

The graph below plots the distance in kilometers traveled by an object over time in hours. What can you conclude from this graph?

• The speed of the moving object first increases and then decreases.

• The speed of the moving object increases over time.

• The speed of the moving object remains constant.

• The speed of the moving object decreases over time.

Tags

NGSS.MS-PS3-1