Astro In-Game Quizzes
Terms in this set (33)
What was Kepler's First Law?
Planets revolve around the sun in elliptical orbits with Sun at one focus of the ellipse.
What best describes the orbit of the Earth around the Sun?
An ellipse that is close to being circular.
Which of the following does Kepler's Second Law support?
When a planet is closer to the Sun, its speed is greater than when it is farther away.
How did Kepler himself originally state this second law?
A line joining a planet and the Sun sweeps out equal areas in equal intervals of time.
What was Kepler's Third Law?
The square of the time period for an orbit of a planet is proportional to cube of its average distance from Sun (in other words P2 is proportional to a3).
Saturn is about 10 times as far from the Sun as Earth is (a = 10 AU, roughly). About how many times does Earth orbit the Sun in the time it takes Saturn to orbit just once?
Besides the discovery that moons orbit Jupiter, what other discovery made by Galileo Galilei, with an early telescope, proved that the Earth is not at the center of the Universe?
The phases of Venus
Kepler's third law states that P^2/a^3= constant. What does P represent in this equation?
Orbital period, in this case how long it takes for a satellite to orbit Jupiter.
Of the four Galilean moons which is the closest to Jupiter?
Which moon of Jupiter is believed to have a liquid ocean beneath a layer of ice?
Which moon of Jupiter is the largest?
Which of these following statements can be said about Venus?
Venus has a very slow speed of rotation and venus is closer to the sun than earth is.
Which among the following scenarios will be true for someone looking 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 planet's surface press together and the plates rise together.
Where are aurorae likely to be seen 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?
Ultraviolet 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:
Is larger on Venus than on Earth
Which two terrestrial planets have the least amount of atmosphere?
Mars and Mercury
The densities of the four Terrestrial planets are similar to each other. This means:
They are made of similar substances
A meteor shower can occur when:
Earth's orbit crosses a trail of debris left behind from a comet.
Are very small pieces of rock burning in the Earth's atmosphere
A comet's nucleus is composed of:
dust dry ice and water ice
The material in a meteorite is:
Roughly as old as the solar system
Which of the following is not a characteristic of jovian planets?
They have a higher density than terrestrial planets
Which planet has a moon with many sulfur volcanoes?
Which planets have a rocky, relatively dense composition?
Mercury, Venus, Earth, and Mars
Which of the following statements is FALSE?
Jupiter's moon lo does not have any volcanic activity
What properties characterize all the Jovian planets (compared to the terrestrial planets?)
Many moons, large size, low densities