PSU ASTRO 7N EVALUATION ACTUAL QUESTIONS AND
ANSWERS GRADED A+
✔✔Which moon of Jupiter is the largest? - ✔✔Ganymede
✔✔Which of these following statements can be said about Venus? - ✔✔Venus has a
very slow speed of rotation. Venus is closer to the Sun than the Earth is. (Only A and C
are true)
✔✔Which among the following scenarios will be true for someone watching the sky from
the Venus surface? - ✔✔The Sun would rise in the west and set in the east
✔✔Craters on Venus: - ✔✔are about the same in size and structure to those on Earth,
Moon, and Mars.
✔✔Volcanoes on Venus - ✔✔produce very large lava flows that cover at least 85% of
the planet's surface
✔✔Where do mountains on Earth come from? - ✔✔In some locations, plates of rock on
the planets surfaces press together and the plates rise together
✔✔From what we described, where are aurorae likely to be see most frequently - ✔✔At
locations near the poles
✔✔What is NOT true about Earth's atmosphere? - ✔✔It has more Carbon Dioxide than
Venus, so is heated more than Venus by the Greenhouse effect.
✔✔What is ozone? - ✔✔Three oxygen atoms bonded together into a single molecule
(O3)
✔✔What would happen if the ozone layer were completely destroyed? - ✔✔UV
radiation from the Sun would get through the atmosphere and cause damage to life
✔✔Why is Venus's day so long (a day-night cycle on Venus lasts for as long as 243
Earth day and night cycles)? - ✔✔Venus's rotation time is very long compared to the
time it takes to go once around the Sun.
✔✔The Greenhouse effect: - ✔✔larger on Venus than on Earth
✔✔Which two Terrestrial planets have the least amount of atmosphere? - ✔✔Mercury
and Mars
✔✔The densities of the four Terrestrial planets are similar to each other. This means -
✔✔they are made of similar substances
, ✔✔Which of the following is not a characteristics of Jovian Planets - ✔✔They have a
higher density than terrestrial planets
✔✔Which planet has a moon with many sulfur volcanoes - ✔✔Jupiter
✔✔Which planets have a rocky, relatively dense composition - ✔✔Mercury, Venus,
Earth, Mars
✔✔Which of the following statements is true? - ✔✔Jupiters moon Io does not have any
volcanic activity?
✔✔What properties characterize all the Jovian planets (compared to Terrestrial
planets)? - ✔✔Many moons, large size, low densities
✔✔Jupiters m00ns in order - ✔✔Io (the closest), Europa, Ganymede, Callisto
✔✔Image of Io the closest m00n - ✔✔potato-like
✔✔Image of mercury - ✔✔
✔✔Venus rotates - ✔✔clockwise
✔✔Saturn has a ___ to ____ gravity ratio - ✔✔1:1
✔✔Io - ✔✔the closest; mostly coppery-yellow with black dots, which are active volcanic
sites; overall very volcanically active, due to "tidal heating" from Jupiter; low crater
density; yellow color from sulfur
✔✔Europa - ✔✔water-ice surface; no craters —ice movement wiped them out; LIQUID
WATER OCEAN below the ICY crust
✔✔Ganymede - ✔✔largest moon in the Solar System (larger than the planet Mercury);
icy crust; has craters so not active now, but cracks show it once was more active
✔✔Moon phases - ✔✔new moon, waxing crescent, first quarter, waxing gibbous, full
moon, waning gibbous, third quarter, waning crescent
✔✔Sun is always within _________ - ✔✔Zodiac
✔✔Half of the mood is always illuminated no matter what phase - ✔✔TRUE
ANSWERS GRADED A+
✔✔Which moon of Jupiter is the largest? - ✔✔Ganymede
✔✔Which of these following statements can be said about Venus? - ✔✔Venus has a
very slow speed of rotation. Venus is closer to the Sun than the Earth is. (Only A and C
are true)
✔✔Which among the following scenarios will be true for someone watching the sky from
the Venus surface? - ✔✔The Sun would rise in the west and set in the east
✔✔Craters on Venus: - ✔✔are about the same in size and structure to those on Earth,
Moon, and Mars.
✔✔Volcanoes on Venus - ✔✔produce very large lava flows that cover at least 85% of
the planet's surface
✔✔Where do mountains on Earth come from? - ✔✔In some locations, plates of rock on
the planets surfaces press together and the plates rise together
✔✔From what we described, where are aurorae likely to be see most frequently - ✔✔At
locations near the poles
✔✔What is NOT true about Earth's atmosphere? - ✔✔It has more Carbon Dioxide than
Venus, so is heated more than Venus by the Greenhouse effect.
✔✔What is ozone? - ✔✔Three oxygen atoms bonded together into a single molecule
(O3)
✔✔What would happen if the ozone layer were completely destroyed? - ✔✔UV
radiation from the Sun would get through the atmosphere and cause damage to life
✔✔Why is Venus's day so long (a day-night cycle on Venus lasts for as long as 243
Earth day and night cycles)? - ✔✔Venus's rotation time is very long compared to the
time it takes to go once around the Sun.
✔✔The Greenhouse effect: - ✔✔larger on Venus than on Earth
✔✔Which two Terrestrial planets have the least amount of atmosphere? - ✔✔Mercury
and Mars
✔✔The densities of the four Terrestrial planets are similar to each other. This means -
✔✔they are made of similar substances
, ✔✔Which of the following is not a characteristics of Jovian Planets - ✔✔They have a
higher density than terrestrial planets
✔✔Which planet has a moon with many sulfur volcanoes - ✔✔Jupiter
✔✔Which planets have a rocky, relatively dense composition - ✔✔Mercury, Venus,
Earth, Mars
✔✔Which of the following statements is true? - ✔✔Jupiters moon Io does not have any
volcanic activity?
✔✔What properties characterize all the Jovian planets (compared to Terrestrial
planets)? - ✔✔Many moons, large size, low densities
✔✔Jupiters m00ns in order - ✔✔Io (the closest), Europa, Ganymede, Callisto
✔✔Image of Io the closest m00n - ✔✔potato-like
✔✔Image of mercury - ✔✔
✔✔Venus rotates - ✔✔clockwise
✔✔Saturn has a ___ to ____ gravity ratio - ✔✔1:1
✔✔Io - ✔✔the closest; mostly coppery-yellow with black dots, which are active volcanic
sites; overall very volcanically active, due to "tidal heating" from Jupiter; low crater
density; yellow color from sulfur
✔✔Europa - ✔✔water-ice surface; no craters —ice movement wiped them out; LIQUID
WATER OCEAN below the ICY crust
✔✔Ganymede - ✔✔largest moon in the Solar System (larger than the planet Mercury);
icy crust; has craters so not active now, but cracks show it once was more active
✔✔Moon phases - ✔✔new moon, waxing crescent, first quarter, waxing gibbous, full
moon, waning gibbous, third quarter, waning crescent
✔✔Sun is always within _________ - ✔✔Zodiac
✔✔Half of the mood is always illuminated no matter what phase - ✔✔TRUE
