Mixed Review

Which of the following is a unit of speed?

• Kilometers Per Hour

• Minutes

• Centimeters

• Meters Per Second Per Second

Which of the following is a unit of time?

• Centimeters Per Year

• Months

• Kilometers

• Meters Per Liter

A lightning bolt travels 40 kilometers to the ground with an average strike time of 0.2 seconds. The variable 0.2 in this problem represents...

• Time

• Speed

• Distance

When Mt. Saint Helens erupted in 1980, ash and steam were ejected 1.829 kilometers into the air at a rate of nearly 1,080 kilometers per hour. In this problem, the variable 1,080 represents...

• Time

• Speed

• Distance

Tags

NGSS.MS-PS3-1

When Mt. Saint Helens erupted in 1980, ash and steam were ejected 1.829 kilometers into the air at a rate of nearly 1,080 kilometers per hour. Which equation below is set up correctly to calculate the time it took the ash and steam to reach the 1.829 kilometer height?

• Time = 1.829 km / 1,080 km/hr

• Time = 1,080 km/hr / 1.829 km

• Time = 1,080 km/hr * 1.829 km

A lightning bolt travels 40 kilometers to the ground with an average strike time of 0.2 seconds. Which equation below is set up to correctly calculate the speed of a lightning bolt?

• Speed = 40 km / 0.2 s

• Speed = 0.2 s / 40 km

• Speed = 40 km * 0.2 s

Which of the following is a unit of distance?

• Centimeters Per Year

• Months

• Kilometers

• Meters Per Liter

How many protons are in Gold

• 79

• 197

• 118

• 276

Tags

NGSS.MS-PS1-1

The blades of a toy helicopter spin when its circuit is connected to a battery. Which sequence below best identifies the energy changes taking place in the helicopter?

• Potential to mechanical

• Chemical to electrical to mechanical

• Mechanical to thermal to sound

• Chemical to Potential to sound and light

When a car burns gasoline it creates hot air to move the pistons in the engine, which causes the car to move. What energy transformation occur from the fuel to the movement of a car?

• thermal energy to mechanical energy

• thermal energy to chemical energy to mechanical energy

• chemical energy to thermal energy to mechanical energy

• chemical energy to electrical energy

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5