Question

What is the correct order from shortest to longest for these units of measure?Angstrom, astronomical unit, centimeter, kilometer, lightyear, micron, nanometer, parsec?

Answer 1

1. Angstrom

→

10

−

10

m

2. Nanometer

→

10

−

9

m

3. Micron

→

10

−

6

m

4. Centimeter

→

10

−

2

m

5. Kilometer

→

10

3

m

6. Astronomical Unit

→

1.496

×

10

11

m

7. Light-year

→

9.461

×

10

15

m

8. Parsec

→

3.26 light-years

, or

3.08

×

10

16

m