Lunar Phases, Spectrum, Dark Energy & Matter

Question 1

It’s 9 a.m. You look up in the sky and see a moon with half its face bright and half dark. What phase is it?

a. first quarter
b. waxing gibbous
c. third quarter
d. half moon

Answer 1

c. third quarter

Question 2

What phase must the Moon be in for a lunar eclipse to occur?

a. New Moon
b. First Quarter
c. Full Moon
d. Third Quarter

Answer 2

c. Full Moon

Question 3

On what part of the Earth do you have to be to see a lunar eclipse?

a. The northern hemisphere
b. The southern hemisphere
c. The equator
d. The night side
e. The day side

Answer 3

d. The night side

Question 4

When the phase of the Moon is full,

a. the Moon and Sun are on opposite sides of Earth.
b. the Moon and Sun are on the same side of Earth.
c. the Moon and Earth are on opposites sides of the Sun.
d. the Moon is closer to Earth than normal.
e. the Moon is farther from Earth than normal.

Answer 4

a. the Moon and Sun are on opposite sides of Earth.

Question 5

When the phase of the Moon is gibbous,

a. the Moon is closer to full moon than to new moon.
b. the Moon is closer to new moon than to full moon.
c. more than half of the visible face of the Moon is illuminated.
d. A and C
e. B and C

Answer 5

d. A and C

Question 6

What time does the first quarter moon rise?

a. sunrise
b. noon
c. sunset
d. midnight

Answer 6

b. noon

Question 7

The full moon rises at approximately:

a. Midnight
b. Sunset
c. Sunrise
d. 9 or 10 p.m.
e. It rises at different times during the year

Answer 7

b. Sunset

Question 8

If you were on the Moon, Earth would

a. show no phases
b. show phases the same as the moon (when it is full Moon it is full Earth, etc.)
c. show phases opposite to the Moon (when it is full Moon it is new Earth, etc.)

Answer 8

c. show phases opposite to the Moon (when it is full Moon it is new Earth, etc.)

Question 9

Suppose that the Moon was a cube, but everything else was the same; it keeps one side facing Earth as it orbits. What would its phases be like?

a. It would not have phases
b. The phases would be just like now
c. The same as now, except square: crescent square, half-square, full square, etc.
d. It would only show “new” and “full” phases

Answer 9

d. It would only show “new” and “full” phases

Question 10

How does the continuous spectrum change with temperature?

a. The higher the temperature, the more red light there is.
b. The higher the temperature, the less light there is.
c. The lower the temperature, the less blue light there is.
d. The lower the temperature, the more light there is.
e. It does not change with temperature.

Answer 10

c. The lower the temperature, the less blue light there is.

Question 11

How are the emission and absorption spectra related to one another?

a. They are not related at all to one another.
b. The emission spectrum has bright lines in the 
same places where the absorption spectrum has dark lines.
c. Both spectra are the result of light from a continuous source passing through a cloud of gas.
d. Both spectra are the result of light emitted from an excited cloud of gas.

Answer 11

b. The emission spectrum has bright lines in the 
same places where the absorption spectrum has dark lines.