Unit 1

How many significant figures does the following number have: 0.002040

• 6

• 4

• 3

• 2

How many significant figures does the following number have: 0.998005

• 9

• 10

• 6

• 5

How many significant figures does the following number have: 100.3

• 4

• 3

• 2

• 5

Round 1047.78 to three sig figs

• 104

• 105

• 1050

• 1050.00

A unicyclist pedals 40 hours at 5 miles per hour without making any stops. How far does she get?

• 200 miles

• 8 miles

• 35 miles

• 45 miles

Convert 2.5 grams into milligrams.

• 25 mg

• 250 mg

• 25,000 mg

• 2,500 mg

1800 milligrams to grams

• 1.8

• 18

• 180

• 0.18

Climate change is primarily caused by rising levels of

• the oceans

• carbon dioxide and other green house gases

• oxygen in the atmosphere

• fossil fuels

What effect does ice and clouds have on the atmospheric temperature? (pick the most correct response)

• No affect

• As ice and cloud coverage decreases the atmospheric temperature will steadily increase

• As ice and cloud coverage decreases the atmospheric temperature will steadily decrease

• As ice and cloud coverage decreases the atmospheric temperature will exponentially increase

• As ice and cloud coverage decreases the atmospheric temperature will exponentially decrease

What is Mr. Farrar's favorite band?

• Nahko and Medicine for the People

• Linkin Park

• Blink 182

• 5 Finger Death Punch

• Breaking Benjamin