please answer these question some of them are wrong. Form A 1. Which of the foll
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Question
please answer these question some of them are wrong.
Form A 1. Which of the following correctly lists our "cosmic address" in order from small to large ? a Earth, solar system, Milky Way Galaxy, Local Group, Local Supercluster, universe b. Earth, solar system, Local Group, Local Supercluster, Milky Way Galaxy, universe c. Earth, Milky Way Galaxy, solar system, Local Group, Local Supercluster, universe 2. Look at the picture of the Moon below. a. Which phase is the Moon in? b. What time would this Moon be at its highest point in the sky? Tae evenins 3. What is an astronomical unit? Any planet's average distance from the Sun Earth's average distance from the Sun Any large astronomical distance a. c. 4. What is a light-year? The dis tqhce that light can tduel mado4Explanation / Answer
2. First quarter moon rises at noon, present at its highest point during sunset and sets at midnight.
Answer : Sunset
13. Eclipses don not occur every month because the earth's orbit around the sun is not in the same plane as moon's orbit.
15. Answer: b. Each planet moves around the earth on a small circles called an epicycle that turned upon a larger circle.
21. Since Mars has no oceans, there will not be any tide, though it has two moons.
25. When you are in car that is moving, your body is also moving in the same speed as the car. When the car is involved in a collision, the car is stopped suddenly. But your body is still in movement. Because of that movement, your body continues to move and hits the widshield. If you are wearing set belt. it holds your body against this movement and prevents the body from hitting the windshield. This phenomenon is decribed by Newton's first law or Newton's law of inertia which states the following:
"An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force."
29. Gravitational force Fg = 400 Newton;
According to Newton's law of gravitation, Fg = G (m1 * m2) / r, Where G=gravitational constant; m1 = Mass of object1; m2 = mass of object2; r = Distance between two objects.
From the question,
400 = G*m1*m2 / r-------------------------- eqn1
If mass of object1 is doubled then m1 = 2m1, eqn1 becomes,
400 = G*2*m1*m2 / r
400/2 = G*m1*m2 / r
=> 200 = G*m1*m2 / r
So when the mass of object1 is doubled, the force of gravity becomes 200 Nwetons
Answer: 200 Newtons
32. When an electron moves from higher energy level to lower energy level, energy is released in terms of photon emission.
Answer: Option b) Photon is emitted
34. Absorption spectrum: When light passes through a low density cloud, the light interact with the molecules present in the cloud. So only a certain wavelength of the light passes through the cloud. This spectrum is called absorption spectrum.
Continuous spectrum: When the light from hot, dense object passes through prism, a continuous spectrum is produced.
Emission spectrum: When the light from hot, low density gas passes through prism, a emission spectrum is produced.
Answer: b) Continuous spectrum
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