ASTR100 FINAL

During the new moon phase, how much of the Moon's total surface is being illuminated by sunlight?

• More than half

• Less than half

• Half

• None

Which of the following statements about the Moon is not true?

• The Moon is visible in our sky only at night

• The Moon's distance from Earth varies during its orbit

• The Moon goes through its cycle of phases in about a month

• The Moon's orbit around Earth is tilted about 5 degrees to the ecliptic plane

• The Moon rotates once in the same amount of time that it takes to orbit around Earth

Which phase of the Moon sets in the west as the Sun is rising in the east at 6am?

• New moon

• Full moon

• First quarter

• Third quarte

During a Solar Eclipse, the Moon's phase must be....

• A new moon

• Full moon

• First quarter

• Third quarter

Which of the following lists the Sun layers in order from inner to outer layers?

• Core, convective, radiative, chromosphere, photosphere, corona

• Core, convective, photosphere, radiative, corona, chromosphere

• Core, corona, convective, chromosphere, radiative, photosphere

• Core, radiative, convective, photosphere, chromosphere, corona

In which of the following layers of the sun do we see sunspots?

• Core

• chromosphere

• Photosphere

• None of the above

The Sun has a diameter of approximately 1,400,00 km and the Earth has a diameter of approx. 13,000 km. Roughly how many Earths would fit across the diameter of the Sun?

• 1

• 110

• 11,000

• 1 million

How does the Sun generate energy today?

• Nuclear fission similar to a power plant

• Nuclear fusion of hydrogen into helium

• Fire burning from the core outward

• Gravitational contraction

What best describes the Solar Cycle?

• It shows an annual change in numbers of sunspots

• The patterns take about 11 years

• It shows the orbit of the Sun around the galaxy

• Both A and B

• Both B and C

The Sun only makes up 1% of the total mass of the solar system

• True

• False