Astro 7N Unit 1&2 Test UPDATED Exam
Questions and CORRECT Answers
How does the Sun appear to more in the sky in the course of a day - CORRECT
ANSWER - East to West, because of Earth's rotation. The stars and planets move in the
same way from our point of view, also because of Earth's rotation
What happens to the Earth in one year - CORRECT ANSWER - It orbits the Sun once
Why do we have seasons - CORRECT ANSWER - The tilt of the Earth's axis of rotation
(23 degrees), with respect to the plane of its orbit around the sun
How is the Earth's axis tilted when we have summer in the Northern hemisphere - CORRECT
ANSWER - With the North Pole toward the Sun
What season is it in the Southern Hemisphere when it is summer in the Northern Hemisphere -
CORRECT ANSWER - Winter
What happens to the moon in 1 month - CORRECT ANSWER - it moves once around the
earth
what causes the phases of the moon - CORRECT ANSWER - the sun is lighting up
different fractions the prat of the moon we see from earth
what is the order of the phases of the moon - CORRECT ANSWER - New, Waxing
Crescent, First Quarter, Waxing Gibbous, Full, Waning Gibbous, Third Quarter, Waning
Crescent, New
When is the full moon visible - CORRECT ANSWER - Only at night. It transits at
midnight, rises 6 hours earlier and sets 6 hours later
, When is the New Moon visible - CORRECT ANSWER - During the day. It transits at
noon, it rises 6 hours earlier and sets 6 hours later
How are the Sun, Earth, and Moon positioned when it is new moon - CORRECT
ANSWER - In a straight line, Sun-Moon-Earth
What is a solar eclipse - CORRECT ANSWER - The moon is blocking the Sun's light or a
location on the Earth's surface is passing under the Moon's shadow
How are the sun, earth, and moon positioned when it is a solar eclipse - CORRECT
ANSWER - Sun-Moon-Earth
What is a lunar eclipse - CORRECT ANSWER - Earth's shadow passes across the moon
How are the sun, earth, and moon positioned when it is a lunar eclipse, and what phase is the
moon in - CORRECT ANSWER - Sun - Earth - Moon
Why do eclipses not occur every month on earth - CORRECT ANSWER - The moon
orbits the earth in a slightly different plane than Earth orbits the sun
What about eclipses of the moons of mars - CORRECT ANSWER - Mars has two small
moons, Phobos and Deimos. Relative to Earth's Moon they are closer to their planet and orbit
faster and closer to the orbital plane of Mars around the Sun. This leads to more frequent eclipses
visible from Mars.
What kinds of radiation get through the earths atmosphere - CORRECT ANSWER -
visible and radio
What two properties of a planet affect the gravity we feel on its surface? - CORRECT
ANSWER - Mass and radius
Questions and CORRECT Answers
How does the Sun appear to more in the sky in the course of a day - CORRECT
ANSWER - East to West, because of Earth's rotation. The stars and planets move in the
same way from our point of view, also because of Earth's rotation
What happens to the Earth in one year - CORRECT ANSWER - It orbits the Sun once
Why do we have seasons - CORRECT ANSWER - The tilt of the Earth's axis of rotation
(23 degrees), with respect to the plane of its orbit around the sun
How is the Earth's axis tilted when we have summer in the Northern hemisphere - CORRECT
ANSWER - With the North Pole toward the Sun
What season is it in the Southern Hemisphere when it is summer in the Northern Hemisphere -
CORRECT ANSWER - Winter
What happens to the moon in 1 month - CORRECT ANSWER - it moves once around the
earth
what causes the phases of the moon - CORRECT ANSWER - the sun is lighting up
different fractions the prat of the moon we see from earth
what is the order of the phases of the moon - CORRECT ANSWER - New, Waxing
Crescent, First Quarter, Waxing Gibbous, Full, Waning Gibbous, Third Quarter, Waning
Crescent, New
When is the full moon visible - CORRECT ANSWER - Only at night. It transits at
midnight, rises 6 hours earlier and sets 6 hours later
, When is the New Moon visible - CORRECT ANSWER - During the day. It transits at
noon, it rises 6 hours earlier and sets 6 hours later
How are the Sun, Earth, and Moon positioned when it is new moon - CORRECT
ANSWER - In a straight line, Sun-Moon-Earth
What is a solar eclipse - CORRECT ANSWER - The moon is blocking the Sun's light or a
location on the Earth's surface is passing under the Moon's shadow
How are the sun, earth, and moon positioned when it is a solar eclipse - CORRECT
ANSWER - Sun-Moon-Earth
What is a lunar eclipse - CORRECT ANSWER - Earth's shadow passes across the moon
How are the sun, earth, and moon positioned when it is a lunar eclipse, and what phase is the
moon in - CORRECT ANSWER - Sun - Earth - Moon
Why do eclipses not occur every month on earth - CORRECT ANSWER - The moon
orbits the earth in a slightly different plane than Earth orbits the sun
What about eclipses of the moons of mars - CORRECT ANSWER - Mars has two small
moons, Phobos and Deimos. Relative to Earth's Moon they are closer to their planet and orbit
faster and closer to the orbital plane of Mars around the Sun. This leads to more frequent eclipses
visible from Mars.
What kinds of radiation get through the earths atmosphere - CORRECT ANSWER -
visible and radio
What two properties of a planet affect the gravity we feel on its surface? - CORRECT
ANSWER - Mass and radius
