PS semister exam

What two measurements are necessary for calculating speed?

• Mass and time
• Temperature and mass
• Mass and distance
• Distance and time

Tags

CCSS.8.EE.C.7B

Calculate the average speed (in meter/sec) if a cheetah runs 180 meters in 10 seconds.

• 198 m/sec
• 170 m/sec
• 12 m/sec
• 18 m/sec

How long did it take this object to travel 10 m?

• 0 s
• 10 s
• 15 s
• 20 s

Tags

CCSS.8.EE.B.5

What does this graph represent?

• Constant speed
• Acceleration
• Not moving

Tags

CCSS.8.EE.B.5

What is this graph showing?

• Constant Speed
• Acceleration (speeding up)
• Deceleration (slowing down)
• No motion

Tags

CCSS.8.EE.B.5

Can be measured in seconds (s)

• Distance
• Time
• Speed
• Acceleration

Tags

CCSS.8.EE.C.7B

An object with which of the following densities will float on water?

• 0.7 g/cm3
• 1.2 g/cm3
• 3.5 g/cm3
• 11.4 g/cm3

Tags

CCSS.HSG.MG.A.2

Which property of matter is determined by dividing its mass by its volume?

• elasticity
• buoyancy
• density
• viscosity

Will an object with a density of 1.01 g/cm3 float or sink?

• float
• sink

Tags

CCSS.HSG.MG.A.2

A scientist has four different liquids and pours them all into a bottle.  The silver liquid sinks to the bottom, the red liquid settles on top of the silver one, and the pink liquid stays at the surface. Which liquid has the smallest density?

• the pink liquid
• the silver liquid
• the red liquid
• the water