REVIEWSCIENTIFIC

MEASUREMENT

True or false

All measurements in science are accurate and precise.

One digit is always estimated.

How close a measurement is to other measurements

precision

How close a measurement is to its true value

accuracy

106 m = 1 Mm

10-12 g = 1 pg

Complete the following conversion factors:

1 µL L10-6

Complete the following conversion factors:

1 mg g10-3

Complete the following conversion factors:

1 pm m10-12

Complete the following conversion factors:

1 ng g10-9

Complete the following conversion factors:

1 Mmm106

Complete the following conversion factors:

1 Gm m109

How many sig fig?0.0120 L

505000 pm

0.61900 Mm

90290 mg

0.00000700120 nm

3

3

5

4

6

7,000,000,000,000 km 1

Convert 2 km to m.

2000 m

Convert 24 g to kg.

0.024 kg

Convert 19290 mg to g.

19.29 g

Convert 11.9 g to mg.

11900 mg

Convert 604 mg to kg.

0.000604 kg

Convert 1011 mm to cm.

101.1 cm

Convert 1011 mm to dm.

10.11 dm

Convert 1011 mm to hm.

0.01011 hm

Convert 0.44 Mm to m.

440000 m

Convert 0.44 Mm to m.

0.44 x 106 m

4.4 x 105 m

Convert 3.1 mg to µg.

3100 µg

Convert 0.022 mg to ng.

22000 ng

Convert 0.022 mg to ng.

2.2 x 104 ng

0.022 x 106 ng

Convert 64.2 pm to nm.

0.0642 nm

Convert 64.2 pm to nm.

64.2 X 10-3 nm

6.42 X 10-2 nm

Convert 9.1 X 107 nm to m.

0.091 m

Convert 9.1 X 107 nm to m.

0.091 m

9.1 x 107 x 10-9

9.1 x 10-2 m

Convert 0.000864 mm to pm.

8.64 x 10-4

8.64 X 105 pm

x 109

Which measurement is largest?

380 pm

300 nm

24 µm

1.1 mm

Which measurement is smallest?

580 dam

7 km

2.4 Gm

1.1 Mm

Which measurement is larger?

3800 g or 3 kg3000 g

Which measurement is smaller?

780 mg or 0.5 g500 mg

Which measurement is larger?

50 dam or 6 hm60 dam

Which measurement is smaller?

3 km or 25 hm30 hm

Which measurement is larger?

0.2 mg or 300 µg200 µg

Which measurement is smaller?

0.7 Gm or 800 Mm700 Mm

Which measurement is larger?

7 Gm or 7 x 106 m7 x 109 m

Which measurement is smaller?

6 ng or 600 pg6000 pg