1.
Where is the asteroid belt?
Correct Answer
B. Outer space
Explanation
The asteroid belt is located in outer space. It is a region between the orbits of Mars and Jupiter where numerous asteroids are found. These asteroids are remnants from the early formation of the solar system and are primarily composed of rock and metal. The asteroid belt is not located on Earth, Neptune, or Jupiter.
2.
Which is not an asteroid?
Correct Answer
C. Africana
Explanation
The options given in the question are names of celestial bodies. Ceres, Europa, and Pallas are all known to be asteroids. However, Africana is not a known asteroid.
3.
What's the largest object around the belt?
Correct Answer
D. Cere
Explanation
The correct answer is "Cere" because a cere is a large, rounded object or structure. In the context of the question, it is likely referring to the largest object around the belt being a large, rounded celestial body or asteroid.
4.
What's an asteroid belt?
Correct Answer
C. A circumstellar disc
Explanation
A circumstellar disc refers to a disk-shaped region in space that surrounds a star, typically consisting of dust, gas, and debris. It is commonly found in young star systems and is believed to be the birthplace of planets. An asteroid belt, on the other hand, is a specific type of circumstellar disc located between the orbits of Mars and Jupiter, where numerous asteroids orbit the Sun. Therefore, the answer "A circumstellar disc" accurately describes what an asteroid belt is.
5.
What are asteroids known as?
Correct Answer
B. Minor planets
Explanation
Asteroids are known as minor planets because they are celestial objects that orbit the Sun and are smaller than planets. They are composed of rocky and metallic materials and are remnants from the early formation of the solar system. While they are often referred to as "space rocks" or "rocky hood," the term "minor planets" is the more accurate and widely accepted term for these objects.
6.
What are known as S-type?
Correct Answer
B. Silicate
Explanation
Silicate is known as S-type because it refers to a type of mineral or compound that contains silicon and oxygen. Silicates are the most abundant minerals on Earth's crust and play a crucial role in the formation of rocks and minerals. They are characterized by their structure, which consists of silicon-oxygen tetrahedra linked together in various ways. Silicates have diverse applications, including in construction materials, ceramics, glass, and even as components in some pharmaceuticals.
7.
Who discovered Ceres?
Correct Answer
B. Gruseppe Piazzi
Explanation
Giuseppe Piazzi is credited with the discovery of the dwarf planet Ceres. In 1801, Piazzi, an Italian astronomer, observed a small celestial object in the asteroid belt between Mars and Jupiter. He initially believed it to be a comet but soon realized it was a new celestial body. Piazzi named it Ceres after the Roman goddess of agriculture and fertility. This discovery marked the first identification of an asteroid and paved the way for further understanding of the solar system's composition.
8.
Which of these is also known as a dwarf planet?
Correct Answer
A. Ceres
Explanation
Ceres is also known as a dwarf planet.
9.
Who discovered Pallas?
Correct Answer
B. Hernrich Olbers
Explanation
Hernrich Olbers is the correct answer because he was the German astronomer who discovered the asteroid Pallas in 1802. Olbers made significant contributions to the field of astronomy, including the discovery of several other asteroids and the formulation of Olbers' paradox, which addresses the question of why the night sky is dark if the universe is infinite and filled with stars.
10.
When was Neptune discovered?
Correct Answer
B. 1846
Explanation
Neptune was discovered in 1846. This was the year when the French astronomer Urbain Le Verrier and the English astronomer John Couch Adams independently predicted the existence and position of an unknown planet based on irregularities in the orbit of Uranus. German astronomer Johann Gottfried Galle then observed and confirmed the presence of Neptune on September 23, 1846. Therefore, 1846 is the correct answer for when Neptune was discovered.