1.
Is the star at the center of the Solar System
Correct Answer
A. Sun
2.
Is a celestial body orbiting a star orstellar remnant that is massive enough to be rounded by its own gravity.
Correct Answer
A. Planet
3.
It means 'wandering star'.
Correct Answer
A. Planet
4.
Is the only natural satellite of the Earth.
Correct Answer
A. Moon
5.
Is an icy small Solar System body (SSSB) that, when close enough to the Sun, displays a visible coma (a thin, fuzzy, temporary atmosphere) and sometimes also a tail.
Correct Answer
A. Comet
6.
They are also been called planetoids, especially the larger ones.
Correct Answer
A. Asteroids
7.
Is the innermost planet orbiting the Sun.
Correct Answer
A. Mercury
8.
The planet that is named after the Roman god. The messenger to the gods.
Correct Answer
A. Mercury
9.
The smallest planet in the Solar System, with an equatorial radius of 2,439.7 km.
Correct Answer
A. Mercury
10.
The first spacecraft to visit Mercury.
Correct Answer
A. Mariner 10
11.
Is the second planet from the Sun.
Correct Answer
A. Venus
12.
The planet that is named after the Roman goddess of love and beauty.
Correct Answer
A. Venus
13.
Is classified as a terrestrial planet and is sometimes called Earth's "sister planet" owing to their similar size, gravity, and bulk composition.
Correct Answer
A. Venus
14.
The planet that is always brighter than the brightest stars outside our solar system.
Correct Answer
A. Venus
15.
The first robotic space probe mission to Venus, and the first to any planet, began on 12 February 1961.
Correct Answer
A. Venera 1
16.
The planet that was known to ancient civilizations both as the "morning star" and as the "evening star", names that reflect the early understanding that these were two separate objects.
Correct Answer
A. Venus
17.
All the planets of the Solar System orbit the Sun in a counter-clockwise direction as viewed from above the Sun's north pole.
Correct Answer
A. True
18.
Planet Venus rotates clockwise (called "retrograde"rotation) once every 243 Earth days.
Correct Answer
A. True
19.
Mercury is the innermost planet in the Solar System.
Correct Answer
A. True
20.
Mercury is the outerrmost planet in the Solar System.
Correct Answer
B. False
Explanation
Mercury is the innermost planet in the Solar System.
21.
Mercury is the smallest planet in the Solar System.
Correct Answer
A. True
22.
Which of the following is one of the four terrestrial planets in the Solar System,
Correct Answer
A. Mercury
Explanation
Terrestrial planets: Mercury, Venus, Earth, and Mars
23.
Mercury is a Terrestrial planet.
Correct Answer
A. True
Explanation
Terrestrial planets: Mercury, Venus, Earth, and Mars
24.
Mercury is not a Terrestrial planet.
Correct Answer
B. False
Explanation
Terrestrial planets: Mercury, Venus, Earth, and Mars
25.
Venus is not a Terrestrial planet.
Correct Answer
B. False
Explanation
Terrestrial planets: Mercury, Venus, Earth, and Mars
26.
Which of the following is not a Terrestrial Planet?
Correct Answer
C. Jupiter
Explanation
Terrestrial planets: Mercury, Venus, Earth, and Mars
27.
In ancient China, Mercury was known as __________, the Hour Star
Correct Answer
A. Chen Xing
Explanation
In ancient China, Mercury was known as Chen Xing (辰星), the Hour Star
28.
In ancient China, Mercury was known as Chen Xing (辰星), the ____________
Correct Answer
A. Hour Star
Explanation
In ancient China, Mercury was known as Chen Xing (辰星), the Hour Star.
29.
In ancient China, Mercury was known as Chen Xing (辰星), the Hour Star.
Correct Answer
A. True
30.
Sun is the star at the center of the Solar System.
Correct Answer
A. True
31.
The third planet from the Sun.
Correct Answer
A. Earth
32.
Earth is the third planet from the Sun
Correct Answer
A. True
33.
Earth is the fourth planet from the Sun
Correct Answer
B. False
Explanation
Earth is the third planet from the Sun
34.
The densest and fifth-largest of the eight planets in the Solar System.
Correct Answer
A. Earth
35.
Earth is the densest and fifth-largest of the eight planets in the Solar System.
Correct Answer
A. True
36.
Earth is the densest and fifth-largest of the eight planets in the Lunar System.
Correct Answer
B. False
Explanation
Earth is the densest and fifth-largest of the eight planets in the Solar System.
37.
The Latin name of this Planet is Terra.
Correct Answer
A. Earth
38.
It is sometimes referred to as the world, the Blue Planet.
Correct Answer
A. Earth
39.
This planet is home to millions of species, including humans.
Correct Answer
A. Earth
40.
The shape of the Earth approximates a(n) _________ spheroid.
Correct Answer
A. Oblate
41.
The mass of the Earth is approximately:
Correct Answer
A. 5.98×10^24 kg
42.
About 71% of the Earth's surface is covered by:
Correct Answer
A. Salt water oceans
43.
The mean radius of the earth is approximately:
Correct Answer
A. 6,371 km
44.
The natural satellite of the Planet Earth.
Correct Answer
A. Moon
45.
Earth orbits the Sun at an average distance of about ________ kilometers every 365.2564 mean solar days, or one sidereal year.
Correct Answer
A. 150 million
46.
Earth is a terrestrial planet, meaning that it is a ________ body, rather than a gas giant like Jupiter.
Correct Answer
A. Rocky
47.
It is usually divided into the stratosphere, mesosphere, and thermosphere.
Correct Answer
A. Atmosphere
48.
Earth's rotation period relative to the Sun—its mean solar day—is 86,400 seconds of mean solar time.
Correct Answer
A. True
49.
The Earth's life forms are sometimes said to form a(n):
Correct Answer
A. Biosphere
50.
It is commonly defined as the totality of existence, including planets, stars, galaxies, the contents of intergalactic space, and all matter and energy.
Correct Answer
A. Universe