Astronomy 1010

Which of the following in NOT part of an acceptable scientific theory? a. It should be as simple as possible. b. It must make testable predictions that, if found to be incorrect, could lead to its own modification or demise. c. It can only be accepted until it has been proven true beyond all doubt. d. It should be based on natural processes and should not invoke the supernatural or divine. e. It must explain a wide variety of phenomena observed in the natural world. - Answer C ...

Which of the following correctly orders structures in the Universe in order of size from smallest to largest? - Answer Solar System, Star Cluster, Milky Way, Galaxy Cluster What causes the seasons? - Answer The tilt of the Earth's rotation axis to its orbit around the Sun causes parts of the Earth to experience more direct illumination from the Sun and longer days during the summer than the winter Newton developed a universal law of gravitation that is expressed as---- Using thi...

Rank the following in order of increasing size: solar system, sun, milky way, Virgo supercluster, universe, earth - Answer smallest: earth, sun, solar system, milky way, Virgo supercluster, universe Rank the following in order of size, from smallest to largest: a light-hour, a light-year, the radius of earth, a light-minute, the distance from earth to the sun, the radius of the solar system - Answer smallest: the radius of the earth, a light-minute, the distance from earth to the sun, a...

The magnification of a telescope depends on the focal length of the telescope and: - Answer the focal length of the eye piece The aperture of a telescope partially or totally determines its: - Answer light gathering power and diffraction limit Why can you see fainter stars with an 8-inch telescope than you can see with your naked eye? - Answer The telescope collects light over a larger area Which of the following phenomena is shown in the figure below? - Answer Refraction ...

Pluto used to be one of the official planets in the Solar System but not anymore. Why is Pluto no longer called a by Astronomers? - Answer Because it is a part of a belt of objects When compared to the rotation of the Sun, what best describes the orbits of the planets in the solar system? - Answer They're all prograde. (The all orbit the sun When compared to the rotation of the Sun, what best describes the rotations of the of the planets in the Solar System? - Answer Most orbit...

Semi-Major Axis (Smallest to Largest) - Answer MVEMJSUN Length of year - Answer semi-major axis or orbit size Strength of seasons - Answer Tilt of rotation axis Length of day - Answer Rotation Rate Rate at which it cools - Answer Planet Size Surface gravity - Answer Mass and Size Jovian Planets - Answer Colder and have longer years To calculate how long it takes a planet to orbit sun - Answer You must know semi major axis Saturn is 10x farther from...

Are constellation stars in the same place as a structure in space, or does it just look like they are from the sun's point of view in our galaxy? - Answer constellation stars are not next to each other, just appear that way from Sun's point of view looking out into our galaxy Are constellation stars all at the exact same distance from the sun or at different distances? - Answer Different distances Are constellation stars scattered all across our galaxy or just the neighbors o...

The solar nebula is - Answer the cloud of gas and dust that gave birth to our solar system Suppose that it had taken longer for the solar wind to clear away the solar nebula. Which of the following consequences would have been most likely? - Answer Some ice-rich objects in the Kuiper belt (such as Pluto or Eris) would have grown to larger sizes You are analyzing rocks that contain small amounts of potassium-40 and argon-40. The half-life of potassium-40 is 1.25 billion years. You fin...

The 23h 56m length of the sidereal day is determined by which of these? - Answer The time between each crossing of the celestial meridian for a star. If you were to travel south of the equator to Chile, which of these changes would you notice? - Answer The season of the year would be opposite the season in the northern hemisphere. Why is it cold in June at the North Pole? - Answer The Sun is low in the sky all day. Suppose the year of the seasons had 365.50 days. What would be ...

How the Solar System Was Formed? - Answer step 1-the birth of our solar system began as dust and gases (nebula) started to gravitationally collapse step 2-the nebula contracted into a rotating disk that was heated by the conversion of gravitational energy into thermal energy step 3-cooling of the nebular cloud caused rocky and metallic material to condense into tiny solid particles step 4-repeated collisions caused the dust-sized particles to gradually coalesce into astroid-sized bod...