1.	Write 0.478 in scientific notation.
		A.	4.78 × 10-1
		B.	478 × 101
		C.	4.78 × 10-2
		D.	4.78 × 102
		Hint
	2.	The diameter of a volcanic particle averaged 0.000022 meter. What is this measure written in scientific notation?
		A.	0.22 × 10-4
		B.	2.2 × 105
		C.	2.2 × 10-5
		D.	2.2 × 10
		Hint
	3.	Express 2.629 × 107 in standard form.
		A.	0.0000002629	B.	2,629
		C.	2,629,000	D.	26,290,000
		Hint
	4.	Express 1,000,000 in scientific notation.
		A.	1 × 107	B.	1 × 106
		C.	1 × 105	D.	1 × 10-6
		Hint
	5.	Express 0.00186 in scientific notation.
		A.	1.86 × 10-3	B.	1.86 × 10-4
		C.	1.86 × 10-5	D.	1.86 × 103
		Hint