Q2 Review

Wind pushes a toy sailboat across a pond. The boat moves in a straight path. What is changing?

• the boat’s direction
• the boat’s path
• the wind’s direction
• the boat’s position

The position of a runner in a race changes as time passes. What could a reference point to describe the change in position? 

• the starting line
• the runner’s speed
• the runner’s right foot
• another runner

Distance and direction of an object's change in position from a starting point

• displacement

• distance

• motion

• reference point

David walks 3 km north, and then turns east and walks 4 km. What is the distance?

• 7 km

• 3 km

• 4 km

• 1 km

The instrument used to find direction is called _________________.

• directionator

• compass

• compactor

• director

Speed is equal to 

• Distance/Time
• Time/Distance
• Time x Distance
• Acceleration

Tags

NGSS.MS-PS3-1

Speed is different from velocity because

• Velocity has a direction
• Speed uses Distance /Time
• Velocity doesn't include time
• Velocity doesn't include distance

An object's change in position over time when compared with a reference point is known as ________

• force
• motion
• friction
• acceleration

The rate at which an object moves (distance/time) is known as ______

• force
• velocity
• net force
• speed

Tags

NGSS.MS-PS3-1

The speed of an object WITH a direction 

• motion
• force
• velocity
• acceleration