The amount of time it takes light to travel from our Sun to the Earth is approximately _____ minutes. (Input a numerical value)

2)

The speed of a future advanced spacecraft is 200,000,000 meters per second. How would you express this value in scientific notation? Assume units of m/s.

a.

20 x 10^8 m/s

b.

2 x 10^8 m/s

c.

200 x 10^9 m/s

d.

200 x 10^8 m/s

3)

Planetary nebulae show regions of current planet formation.

True

False

4)

The Absorption Lines seen in the Sun's spectrum caused by atoms in the solar atmosphere are called:

	a.	Kirchhoff Lines
	b.	Fraunhofer Lines
	c.	Newtonian Lines
	d.	Kepler Lines