Physics-1 Measurements

Match the following

• unit of length

• s

• unit of force

• g/cm³

• unit of time

• m

• unit of density

• K

• unit of temperature

• N

Tags

NGSS.MS-PS3-4

Which one is made of the densest material?

• wood

• cotton

• rock

• iron

What is the density of the liquid in the picture? (Volume = 0.4 x 0.5 x 0.5 = 0.1 m³)

• 18 kg/m³

• 800 kg/m³

• 0.8 kg/m³

• 4 kg/m³

Answer explanation

80/(0.4x0.5x0.5)

A stack of 500 sheets of paper is 50mm high. What is the thickness of one sheet of paper?

• 0.1 mm

• 0.2 cm

• 4.2 cm

• 2.0 mm

Answer explanation

50mm is the thickness of 500 sheets of paper.

A can contains 375 mL of soda. How much is left after 0.308 L is removed? (Pay attention to the units)

• 374 mL

• 344.2 mL

• 67 mL

• 134 mL

match the tool with the quantity we can measure

• mass

• ruler

• time

• stopwatch

• length

• thermometer

• temperature

• balance

Which number below has 4 significant figures?

• 0.0009

• 30.42

• 87.991

• 15,400.0

Answer explanation

Non-zero digits are always significant. Any zeros between two significant digits are significant. A final zero in the decimal portion is significant.

The speed limit on some interstate highways is roughly 100 km/h. What is this in meters per second?

(100 km= 100000 m, 1 hour=3600 second)

• 100000

• 27.8

• 1.67

• 16.7

Answer explanation

1 hour has 3600 seconds

The metric system is a system of measurement based on the number . .

• 1

• 5

• 10

• 100

Which one below is not an SI unit?

• kilogram
• meter
• second
• pound