Picha CH 3 Review

Metric Conversions

100

How many meters are in 2.64 km?

2640 m 

200

Convert 0.0526 Kg into cg

5260 cg

300

How many years are in 2.5 millenium? (Hint: milli) 

2500 years

400

Convert 1.5 Decaliters to deciliters

150 dL

500

In KHD(b)dcm, what does each letter stand for. (What are the prefixes)

Kilo, Hecto, Deca, (Base), deci, centi, milli

Sig Fig

100

How many sig figs in the number 0.050950

5 sig figs 

200

Round 500.78206 to 4 sig figs

500.8

300

Explain why 15 and 15.0 are two different numbers when measuring. 

Different Precision

400

Round 0.0031060990 to 3 sig figs.

0.00311

500

Mr. Picha is going to draw a graduated cylinder. Give me a precise measurement of the graduated cylinder

...

Sig Fig Math

100

In correct sig figs and units solve 12.50 cm + 1.2 cm 

13.7 cm 

200

In correct sig figs and units solve 4.08 m x 25.1 m 

102 m²

300

In correct units and sig figs solve 100.00 g / 25.0 L 

4.00 g/L

400

In correct sig figs and units solve this

(15.42 m - 15.10 m) x 2.534 m

0.81 m²

500

In correct sig figs and units solve this 

(2.541 g + 0.03 g) / 1.05 mL

2.45 g/mL

Dimensional Analysis

100

Convert 5.0 ft to inches

60 inches

200

Convert 2,186 seconds into minutes. (Round to 4 sig figs)

36.43 minutes

300

A person weighs 180 lbs. Convert that to grams. (Round to the nearest whole number)

2.2 lbs = 1 kg

81,647 g 

400

Convert 3 miles into cm 

1 mile = 5280 ft 

1 ft = 30.48 cm 

(Round to nearest whole number)

482,803 cm 

500

Mr. Picha watches 2 episodes of Game of Thrones every day, each episode runs for an average time of 45 minutes. Over the course of 2 full years, how many 24 hour days does Mr. Picha spend watching game of thrones?

Conversion Factors

1 episode = 45 mins 

1 day = 3 episodes 

1 hr = 60 minutes

1 full day of tv = 24 hours

1 year = 365 days 

45.6 days of Game of Thrones

Misc.

100

This term refers to how close a measured value is to the true or accepted value.

Accuracy

200

A block of metal has a 120 g and a volume of 15 cm³. What is the density?

8.0 g/cm²

300

Vocab: A fraction equal to 1 made of two equal measurements

Conversion Factor

400

Gold has a density of 19.3 g/cm³ ,What is the mass of a bar of gold with a volume of 50.0 cm³

965 g

500

A 54.0 g block of aluminum (Density = 2.7 g/mL) is placed in a tub of water. How many mL of water is displaced?

20 mL