Unit 2 Review (Energy, Force, & Motion)

The mass of an object will ALWAYS remain constant no matter where the object is located.

• True

• False

Tags

NGSS.MS-PS1-5

Students in a Science class explored a simulation in which the energy of a skateboarder was observed as it moved up & down a ramp. Based on their observations, the total energy of the skateboarder appeared to decrease. What is the best explanation for the decrease in total energy?

• The energy decreased because it transformed into other forms of energy like heat because of friction.

• The total amount of energy always decreases because energy can be created and/or destroyed.

Tags

NGSS.MS-PS3-5

Which of the following is an example of a force that acts at a distance?

• A baseball hit by a baseball player's bat.

• An apple falling off of a tree to the ground.

• A water skier gliding across the water.

• A coyote walking along a canal bank.

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

Mrs. Halleran dropped a tennis ball on the ground and watched it bounce. At what point does the ball have ONLY potential energy?

• When the ball hit the ground.

• At its highest position when it bounced back up..

Tags

NGSS.MS-PS3-2

Newton's Laws of Motion states that an object in motion should keep moving until some force acts on it. What force would cause a soccer ball to stop rolling?

• Gravity

• Friction

Tags

NGSS.MS-PS2-2

As an object rolls down a ramp its speed increases. When the object hits the base of the ramp and continues moving across a flat surface it continues moving at a CONSTANT speed. Why?

• Gravity stopped acting on the object.

• The amount of friction increased on the flat part of the tract.

• The forces on the object are balanced, so it will travel at the same speed.

Tags

NGSS.MS-PS2-2

If I wanted to INCREASE the gravitational forces between two objects, then what could I change?

• Increase the density of one of the objects.

• Increase the mass of both objects.

Tags

NGSS.MS-PS2-4

A Brightline train left the train station then traveled at a constant speed of 70 miles per hour. Which graph best represents this scenario?

• 
• 
• 
• 

Tags

NGSS.MS-PS3-1

In class, we watched a video clip of Neil Armstrong on the Moon. What is different about Mr. Armstrong on the Moon versus on Earth?

• His mass is different on the Moon.

• His weight is different on the Moon.

Tags

NGSS.MS-PS2-4

A bowling ball is traveling at a speed of 6 meters per second (m/s). How long will it take for the bowling ball to travel 42 meters (m)? Use the formula, S = d/t, to answer the question.

• 7 seconds

• 14 seconds

• 28 seconds

• 56 seconds