eQuizShow

Astronomy Review

Gravity and Planetary Motion

Question: What is gravity
Answer: The force of attraction between particles of matter.

Question: When one object goes around another object it is doing what?
Answer: Revolving or making a revolution around the other object

Question: Which measurement would change if you went to the moon, your mass or your weight and why?
Answer: Your weight would change because it is a measurement of the force of gravity on you and the moon has 1/6 the gravity of the Earth

Question: Why do objects that originate far from the Sun have very elliptical orbits?
Answer: Objects that are far from the Sun are not held as strongly by gravity because the force of gravity decreases with distance between objects.

Question: What two things keep an object in orbit around another object?
Answer: Gravity and inertia together keep an object in orbit around another object.

Seasons

Question: What is the term for the shortest distance between a planet and its star?
Answer: What is perihelion.

Question: What imaginary line exists at 23.5 degrees north?
Answer: the Tropic of Cancer

Question: What is the one big feature of the Earth, along with its revolution around the Sun, that causes the seasons?
Answer: the tilt

Question: What two changes take place for a particular area on Earth because the Earth is tilted, and ultimately cause the seasons?
Answer: the hours of daylight and the height of the sun above the horizon (or angle of the sunlight hitting the surface)

Question: If the Earth were tilted substantially more (say 45 degrees), what would the result be in terms of the seasons?
Answer: The seasons would be more extreme - with a hotter summer and a colder winter, because there would be more hours of daylight in the summer and more direct light - and vise versa in the winter.

Phases, Eclipses and TIdes

Question: Which side of the circle, representing the moon, is not completely lit at the phase after first quarter, and what is that phase called?
Answer: The left side is not completely lit and it is called waxing gibbous

Question: What are the positions of the Earth, Moon and Sun for a solar eclipse?
Answer: The Moon is between the Earth and Sun, at New Moon.

Question: What are the type of tides that occur when the moon is at first or last quarter?
Answer: Neap tides

Question: What causes the tides on the Earth
Answer: The gravitational pull of both the Moon and the Sun on the Earth cause the tides.

Question: The high tide is higher than normal and the low tide is lower than normal. What tide is it and what two phases of the moon could it be?
Answer: It is spring tide and it could be either full moon or new moon

Our Solar System

Question: What is the layer of the Sun that sun spots occur on and is it part of the interior or part of the atmosphere?
Answer: The layer is called the photosphere and it is the first layer of the Sun's atmosphere.

Question: What are reddish loops of gas from the Sun's surface called and what regions do they connect?
Answer: The loops are called prominences and they connect sun spot regions.

Question: What are the names of the five dwarf planets in the Kuiper Belt?
Answer: What are Sedna, Haumea, Pluto, Makemake and Eris

Question: List all the layers of the Sun in order and say which ones are interior and which are atmosphere layers.
Answer: interior layers - core, radiation zone, convection zone, 
atmosphere layers - photosphere, chromosphere, corona


Question: Name all the planets and dwarf planets in order, starting at the Sun.
Answer: Sun, Mercury, Venus, Earth, Mars, Ceres/asteroid belt, Jupiter, Saturn, Uranus, Neptune, Kuiper Belt starts, Pluto, Haumea, Makemake, Eris and Sedna

Stars and Galaxies

Question: What happens in the core of a star to make it a real star and what is the result?
Answer: nuclear fusion is happening and it results in hydrogen being fused into helium, which energy left over

Question: What determines if a star becomes a red giant or a red super giant?
Answer: The mass of the star determines which path the star takes at the end of its life.

Question: What are the five types of galaxies?
Answer: Ring, spiral, barred-spiral, elliptical and irregular

Question: What are the five characteristics used the classify stars?
Answer: the characteristics are: color, mass, brightness, temperature and chemical composition.

Question: What is the name of our galaxy, what type of galaxy is it and where is our solar system located within our galaxy?
Answer: The Milkyway Galaxy is a barred spiral galaxy and our solar system is located about 2/3 of the way out from the center on the Orion Arm.