measurements

Question 1

What is order of magnitude?

Answer 1

A power to the base 10 used to quantify

and compare size.

Question 2

What is a centimetre (cm)?

Answer 2

1 x 10^-2 metres

Question 3

What is a millimetre (mm)?

Answer 3

1 × 10^-3 metres

Question 4

What is a micrometre (µm)?

Answer 4

1 × 10^-6 metres

Question 5

What is a nanometre (nm)?

Answer 5

1 x 10^-9 metres

Question 6

What is the difference in order of magnitude between a human hair (100bµm) and the HIV virus (length = 100nm)?

Answer 6

100 µm = 10-4 m
100 nm = 10-7 m
-4-(-7) = -4 + 7 = 3

Question 7

How can magnification be calculated?

Answer 7

magnification =

size of image / size of real object

Question 8

What is standard form?

Answer 8

A way of expressing numbers - written as a figure between 1 and 10 multiplied by a positive or negative power of 10.

Question 9

what is one order of magnitude?

Answer 9

10x

Question 10

state the order of magnitude pattern

Answer 10

every order of magnitude is 10x greater than the one befpre