Review STAAR

1. Which of the following statements about speed and velocity is correct?

• Velocity only describes an object’s rate of motion.
• Speed describes how an object is changing its velocity.
• Speed and velocity both describe how an object is speeding up.
• Only velocity includes the direction an object is traveling.

2. Which of the following objects is not changing its velocity?

• A golf ball rolling down a ramp
• A skateboard rolling up a hill
• A cue ball rolling forward at a constant speed
• A marble going around the curve in a track

Tags

NGSS.MS-PS2-2

Acceleration describes how an object’s velocity is changing.  Which of the following scenarios provides the best example of an accelerating object?

• A car driving at a constant speed
• A book sitting on top of a high shelf
• A toy train traveling in a circle
• A toy boat floating in a bathtub

Tags

NGSS.HS-PS2-1

When a car goes around a corner at 20 mph, why do we say it  accelerates?

• The car is accelerating because of the velocity is constant
• The car accelerates because it's going 20 mph
• Cars always accelerate when they are in motion
• The car is accelerating because it's changing direction

Tags

NGSS.HS-PS2-1

The gees fly 23 mph to the south when they migrate for the winter. 

• speed
• velocity
• acceleration

The motorcycle slowed down as it approached the yield sign. 

• speed
• velocity
• acceleration

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

A snail can crawl 2 meters in 2 hours. 

• speed
• velocity
• acceleration

The tornado is traveling northwest at 20 mph. 

• speed
• velocity
• acceleration

A wheeled cart is moving to the right at a constant speed.  Two forces of equal magnitude are acting upon the cart. Which of the following best describes the forces and motion of the cart?

• Balanced Forces, Constant Speed
• Balanced Forces, Acceleration
• Unbalanced Forces, Constant Speed
• Unbalanced Forces, Acceleration

Tags

NGSS.MS-PS2-2

How will this object move? 

• It won't move. 
• It will move to the right. 
• It will move to the left. 
• It will move up. 

Tags

NGSS.MS-PS2-2