*** no longer use*** CHM Unit 1: Data and Measurement

What is the base unit for measuring mass?

• Meter

• Gram

• Liter

• Celsius

Convert 9 m to cm. (1 m = 100 cm)

• 900.

• 0.9

• 90.

• 0.09

How many significant figures are in the measurement 0.0020 m

• 1

• 2

• 3

• 4

• infinite

A tested explanation that is supported by experimental data

• data

• theory

• hypothesis

• fact

Ben makes five paper helicopters with different wing lengths. He drops them the same way from a height of two meters for five trials each. He records the amount of time it takes for each helicopter to fall to the ground.

What is the independent variable?

• Dropping the same way

• Wing Length

• Amount of time it takes the helicopter to hit the floor

• Dropping from the same height

Refers to how close a series of measurements are to one another

• accuracy
• precision
• significant figure
• scientific notation
  

Convert 3.5 gallons into cups. (1gal = 16cups)

• 56 cups

• 0.21875 cups

• 19.5 cups

• 48 cups

The length of a desk is 3.5 feet. How many centimeters is the length? 
(there are 2.54 cm in an inch)

• 60
• 120.23
• 106.68
• 117.12

What measurement is not part of the metric system?

• millimeter

• centimeter
• meter
• inch

How many minutes are in four hours?

• 175min

• 280min

• 240min

• 325min