1.A lamp is lit in a dark room. Its temperature increases from room temperature

Question

1.A lamp is lit in a dark room. Its temperature increases from room temperature to 25,000 degrees K. (It's a special lamp.) How does its color change when viewed with the naked eye?

a. dark, white

b. blue, red, invisible

c. invisible, red, blue, even more blue

d. black, red, white, even more white

2.Nuclear fusion ____________ and nuclear fission ___________. Select one:

a. occurs in the Sun / occurs in Red Giants

b. is easy / is hard

c. is not important for astronomy / is crucial for astronomy

d. builds more massive nucleus elements / builds lower mass nucleus elements

3.What is the luminosity of a star with twice the mass of our Sun?

a. 20 LSun or 1 LSun

b. 23.5 LSun or ~10 LSun

c. 21 LSun or 2 LSun

d. 2-1 LSun or 0.5 LSun

4.Which of these objects does NOT emit light like a blackbody? Select one:

a. the Sun

b. lava

c. you

d. white dwarf

e. the red light on the front of your TV that lets you know it's on

5. The Enterprise starship gets within 2 times the event horizon of a black hole. If it can travel at nearly the speed of light, what happens to the starship? Select one:

a. It is trapped forever, not falling into the black hole, but never escaping.

b. It is sucked in.

c. As the ship falls into the black hole, it is stretched into spaghetti.

d. Nothing.

Explanation / Answer

1.A lamp is lit in a dark room. Its temperature increases from room temperature

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