AST101H1 Study Guide - Midterm Guide: Orbital Period, Northern Hemisphere, Apparent Retrograde Motion
167 views5 pages
Which of the following is FALSE?
(a) Our solar system contains many planets
(b) Our galaxy contains many solar systems
(c) Our universe contains many galaxies
(d) Our galaxy contains many stars
(e) Our solar system contains many stars
Imagine you are an alien living on a planet 50 light from Earth. You use a very, very powerful telescope
to look at Earth. If you look at Earth today, you would see Earth the way it did, does, or will look in the
year: (a) 1913
Neptune is cold (about -200 C). To the naked eye, Neptune is blue in colour. Which of the
following could correspond to the spectrum of light EMITTED by Neptune?
4. Which of the following best describes the motion of planets in the solar system?
(a) All planets orbit in the same direction; some rotate in different directions.
(b) All planets orbit and rotate in the same direction.
(c) Planets orbit in different directions, but they all rotate in the same direction.
(d) Planets orbit and rotate in all different directions.
(e) There is no general pattern to the motions of planets in our solar system.
5. Compared to terrestrial planets, jovian planets:
(a) contain more hydrogen
(b) are smaller
(c) orbit closer to the Sun
(d) have fewer moons
(e) are less massive
Which of the following observations would NOT agree with Kepler's third law?
(a) a comet orbits the Sun beyond Pluto with an orbit twice as wide as Pluto's orbit
(b) two asteroids orbiting the Sun at 2.5 and 3.0 AU both take the same amount of time to orbit
(c) a planet has five moons, the outermost of which takes the longest to orbit
(d) a satellite orbiting Earth has an orbital period of less than one week
(e) after colliding with another asteroid and being pushed into a new orbit closer to the Sun, an
asteroid's orbital period decreases
The first person to use a telescope to make astronomical observations was:
8. Which of the following scenes involving the Moon can never be seen from Earth?
(a) the full Moon and Mars on the same side of the sky
(b) a solar eclipse during a full Moon
(c) the Moon at a quarter phase during the daytime
(d) a high tide while the Moon is above the horizon
(e) a lunar eclipse seen from Canada
Which of the following best describes the mechanism by which the Sun generates energy?
(a) the Sun converts matter into antimatter
(b) the Sun converts hydrogen into helium plus energy
(c) the Sun converts hydrogen into pure energy
(d) the Sun converts hydrogen into neutrinos plus energy
(e) the Sun converts matter into neutrinos and antimatter
Compared to light with a high frequency, light with a low frequency:
(a) is infrared light
(b) has a shorter wavelength
(c) appears bluer in colour
(d) travels slower in a vacuum
(e) has less energy
11.When they are lined up on the same side of the Sun, the distance between Earth and Venus is
(a) less than 1 AU
(b) 1 AU
(c) 5 AU
(d) 13 AU
(e) more than 13 AU
12. What colour are the hottest stars?
13. The force of gravity is responsible for
(a) keeping planets in orbit around the Sun
(b) the tides