1. Astronomy Day Starters Great Daily Review

2. 1.An Astronomical Unit is a.The distance around Earth’s orbitb. One light-year c.The average diameter of Earth’s orbitd. The average radius of Earth’s orbit 2.1 x 10 9 is equal to a.One millionb. One thousand c.One billiond. One trillion 3.The circumference of a round Earth was discovered about a.500 years agob. 2,000 years ago c.4,000 years agod. Wait….it’s round? 4.One light-year is a.356 daysb. 100 days c.10 astronomical unitsd. How far light goes in a year 5.About how far away is the Sun? a.One astronomical unitb. 8.25 light-minutes c.93 x 10 6 milesd. All of the above

3. 1.The North Pole of the celestial sphere is also a.The North pole of the Earthb. The North Pole of the Sun c.Neither “a” nor “b”d. Both “a” and “b” 2.The Ecliptic is a.also the celestial equatorb. also the Earth’s equator c.the path of the Sun and planetsd. The Earth’s wobble 3.A sidereal day is based on the relative position of a.The Sunb. The ecliptic c.Faraway starsd. The galactic center 4.Compared to a Solar day, a sidereal day is a.longerb. shorter c.the samed. brighter, with smiles and lollypops 5.About how far away is the Sun? a.One astronomical unitb. 8.25 light-minutes c.93 x 10 6 milesd. All of the above

4. 1.A solstice is a.The longest day followed by the shortestb. The longest day c.The shortest dayd. Either “b” or “c” 2.The vernal equinox is on the first day of a.fallb. spring c.summerd. winter 3.Precession means that a.The Earth “wobbles” like a top and moves through a cycle of “North Stars” every 25,000 years. b.The Earth’s axis is “tilted” c.The Earth’s orbit gets larger and smaller d.The “tilt” of the Earth moves between 22.1º and 24.5º 4.An Astronomical Unit is a.The distance around Earth’s orbitb. One light-year c.The average diameter of Earth’s orbitd. The average radius of Earth’s orbit 5.If the Sun just “went out”, how long would it take for us to know it? a.8.25 minutesb. 8.25 light-minutes c.one solar dayd. One sidereal day

5. 1.Parallax is a.The observed movement of something you are looking at. b.How much an observer moves c.Apparent motion, based upon movement of an observer d.10 light-years 2.If parallax is smaller, then the object being observed is a.fasterb. farther away c.closerd. slower 3.The Earth cycles through a series of “North Pointers” about every a.25,000 years. b.10,000 years. c.2,000 years d.100,000 years 4.A solstice is a.The longest day followed by the shortestb. The longest day c.The shortest dayd. Either “b” or “c” 5.The Autumnal equinox is in a.Septemberb. December c.Marchd. June

6. 1. Kepler’s 3 rd law indicates that the farther away an orbiting body is from its partner, the angular speed will be a.Fasterc. The same as a speed from closer in b.Slowerd. It depends upon their combined mass 2.Planet “a” is orbiting its Sun once every 2.5 days, and is 5.6 astronomical units away from it. Planet “b” is orbiting the very same Sun once every 5.6 days. How far away from the Sun is planet “b”? T 2 a /R 3 a = T 2 b / R 3 b a.AAAc. CCC b. BBBd. DDD 3.Which of the following values of eccentricity would a reasonable value for a planet’s orbit that was almost a perfect circle? a..001c..950 b..500d.1.001 4.Which particle is the nucleus of a Helium atom? a.Alphac. Beta b.Gammad. Delta 5.Which type of light ray has the longest wavelength? a.Gammac. Radio b.Visibled. X-ray

7. 1. Planet “a” is orbiting its Sun once every 2.5 days, and is 5.6 astronomical units away from it. Planet “b” is orbiting the very same Sun once every 4.3 days. How far away from the Sun is planet “b”? T 2 a /R 3 a = T 2 b / R 3 b a.AAAc. CCC b. BBBd. DDD 2When investigating the Doppler effect, one finds that the pitch (or color) of a object will change when a.The relative position of the observer changes b.The energy source is in motion c.The observer is in motion d.All (or any) of the above e.“b” or “c” only 3.Gamma rays have more energy than radio waves. Which travels at a higher rate of speed? a.Gammac. Radio b.Same speedd. It depends upon wave length 4.What is the sub-atomic particle that carries light from an energy source to an observer? a.Electron particlec. Beta particle b.Alpha particled. Photon particle 5.What does the Doppler Effect do to waves of light energy? a.Change its speedc. Change its wavelength b.Change its frequencyd. All the above, except “a”

8. A planet is orbiting a star at a distance of 2.1 astronomical units. The planet makes a complete orbit each 450.0 Earth days. There is another planet at a distance of 1.1 astronomical units. How long will it take for the second planet to make one complete orbit? T 2 a /R 3 a = T 2 b / R 3 b

9. Barry, an intrepid astronomer, finds an electromagnetic signal. She calculates the wavelength to be 205.0 meters long. What is the frequency? wavelength x frequency = speed What kind of wave is this?

10. 1.Which one of the following is NOT a theory of moon creation? a.Fusionb. Fissionc. Co-creationd. Large impacte. Capture 2.What things does / did the moon’s creation do, that allowed life on Earth to flourish? a.Provide a gravitational point for Earth’s rotation b.Protect Earth from large meteors, like a shield c.Add large amounts of iron and nickel to the early core of the Earth d.Provide the Earth with a rotational spin e.All except “b” 3.Comparing the moon and the Earth; a. The moon as a whole is less dense b.The surface of the moon is less dense, the core is similar c.The moon and the Earth have similar densities d.The moon and the Earth are made of similar materials, in different ratios e.“a” and “d” 4.The Maria on the moon is a result of (according to Mr. Monroe, not the book) a.Large volcanoes b. Preferential movement of magma c. Large meteor impacts d. Early water accumulation 5.When there is a “fingernail” of light on the “right” side of the moon, it is called a.Waxing gibbous b. Waxing crescent c. Waning crescent d. New moone. Waning gibbous 6.What would a “new moon” look like? a.All darkb. Completely lit c. Just turning lightd. Dark, except right side e. Almost lit 7.As a result of a lack of atmosphere, the majority of the moon is a.Rockyb. Akin to pavement c. Dustyd. Light and wispye. Dark 8.Comparing the dark side of the moon with the near side; a.The dark side always faces away from the Sun. d. The dark side always faces away from Earth b.The dark side is more heavily craterede. “b” and “d” c.“a” and “b”

11. 1.A telescope that creates a focal point by bending the light in a glass lens is a a. Newtonian Telescoped. Refraction Telescope b. Reflection Telescopee. James Webb Telescope c. “a” and “b” 2.An advantage of a Reflection Telescope is that it is a. Inexpensived. Cheap to make b. Lighte. Large c. Well working in low light 3. The name of the first space based telescope that we studied was/is a. James Webb Telescoped. Cassini Telescope b. Hubble Telescopee. Isaac Newton Telescope c. Johan's Kepler Telescope 4. The James Webb Telescope sees in the infrared light wave spectrum because a. The redshift of faraway starsd. There is more infrared light b. Infrared light is straighter than visible lighte. Infrared works better with a refraction lens c. Infrared light goes farther than visible light 5. The telescope that we looked at yesterday is a a. Reflecting telescoped. Refracting telescope b. Keppler epithelia telescopee. Really cool telescope c “a” and “e” 6. What is the name of our closest star a. Alpha Proxima Centarid. Betelgeuse b. North Stare. Zyphoid Centari c. None of these