Question

ANSWER TRUE OR FALSE FOR EACH OF THESE.

1. Life forms have been discovered on other planets.
2. The most unusual characteristic of Uranus is axis tilted 98°.
3. The two heavenly bodies which were predicted to exist before they were sighted are Neptune and Pluto.
4. The three planets which have rings are Saturn, Neptune, Uranus.
5. The most abnormal thing about Pluto is its orbit.
6. Neptune's discovery was predicted before it was actually discovered.
7. Mars has a very thin atmosphere of carbon dioxide.
8. Venus is covered with an atmosphere of dense clouds.
9. Pluto is always farther away from the sun than Neptune is.
10. Uranus is a pale green planet, with 27 satellites and several rings.
11. The asteroid belt may be the remains of a former planet.
12. Comets could possibly be millions of years old.
13. The existence of comets provides possible evidence for a young solar system.
14. Comets are made up of dust and frozen gas particles.
15. As the moon revolves around the Earth, eventually all of the moon's surface can be seen.
16. The moon's period of rotation and revolution are the same.
17. The moon revolves in the same direction as the Earth's rotation.
18. The new moon can be seen in the night sky only.
19. Ocean tides are produced by a combination of the moon and sun's gravity.
20. The largest tides occur at new moon, full moon, solar eclipse, & lunar eclipse.
21. Neap tides occur during the quarter moon phase
22. One of the first useful instruments used by astronomers to map the position of the stars was the astrolabe.
23. A telescope which has an eyepiece and large glass lens connected by a large body (tube) is called a refracting telescope.
24. A reflecting telescope uses a mirror to collect light from an object.

Answer 1

1.t
2.f
3.f
4.t
5.t
6.t
7.f
8.f
9.t
10.t
11.f
12.t
13.t
14.f
15.t
16.f
17.t
18.t
19.f
20.t
21.f
22.t
23.f
24t

Answer 2

1. True -- Forms of life has been discovered on Mars.

2. True -- It has a unique configuration because its axis of rotation is tilted sideways. Its north and south poles, therefore, lie where most other planets have their equators.

3. False -- Neptune and Pluto were both predicted before discovery, however, Pluto was some degrees away from the predicted location.

4. True -- Saturn has 4 groups of rings, Neptune has 5 rings and Uranus has 2 sets of rings.

5. True -- It takes 248 Earth years for Pluto to complete one orbit around the Sun.

6. True -- Neptune was correctly predicted.

7. True -- The atmosphere is very thin and contains about 95.3% carbon dioxide and 2.7% nitrogen.

8. True -- Venus has its surface covered thick clouds which contains craters, volcanoes, mountains, and big lava plains.

9. False -- Pluto's orbit around the Sun is very elliptical, as such there are times when it crosses Neptune's orbit and becomes closer to the Sun than Neptune.

10. True.

11. True -- Asteroids are made elements and particles which are considered to be remains of planets which did not fully form.

12. True -- Astronomers think comets are leftovers from the material that initially formed the solar system about 4.6 billion years ago.

13. True -- Astronomers believe comets are leftovers from the material that initially formed the solar system.

14. True -- Comets contain dust, ice, carbon dioxide, ammonia, methane which are in frozen states.

15. False -- Tidal forces from Earth have slowed down the Moon's rotation to the point where the same side is always facing the Earth as such, all of the moon's surface cannot be seen.

16. True -- The moon keeps the same face pointing towards the Earth because its rate of spin is tidally locked so that it is synchronized with its rate of revolution (the time needed to complete one orbit). In other words, the moon rotates exactly once every time it circles the Earth.

17. True.

18. False -- A new moon is not seen in the sky at night! It rises with the sun and sets with the sun.

19. False -- The height of the ocean's tidal bulges is controlled by the moon's gravitational force and the Earth's gravity pulling the water back toward the Earth. (Moon and Earth, not the sun).

20. True.

21. Question does not specify what quarter, however -- Neap tides occur during the first and third quarter moon.

22. True.

23. True -- Refracting telescopes have a large glass lens at the front, then a long tube (body), then an eyepiece or instrumentation at the rear.

24. True -- There are two mirrored surfaces inside a reflecting telescope and they are used to collect the image (light) and reflect it into the eyepiece