Free Our Universe 03 Practice Test - 5th Grade
Question 1
The Earth has only one Moon.
True
False
SOLUTION
Solution : A
- The Earth has only has one Moon that revolves around it.
- It is a natural satellite.
Question 2
The Moon takes
27.3
27.4
26.3
26.4
SOLUTION
Solution : A
The Moon completes one revolution around the Earth in about 27.3 days.
Question 3
Which of the following is the correct order of planets in size from smallest to largest?
SOLUTION
Solution : D
- Jupiter is the largest planet of the solar system.
- Saturn is the second largest planet of the solar system.
- Mercury is the smallest planet of the solar system.
So, the correct order of planets in size from smallest to largest will be: Mercury < Earth < Saturn < Jupiter
Question 4
If a new planet is discovered between Earth and Mars, then the time taken by that planet to revolve around the Sun would be:
SOLUTION
Solution : B and C
The time taken by the new planet to complete one revolution around the Sun will be more than that of Earth but less than that of Mars.
It is because the new planet has to travel more distance than Earth but less distance than Mars.
Question 5
Which of the following is the seventh planet from the Sun?
Saturn
Neptune
Uranus
Mars
SOLUTION
Solution : C
- Our solar system has eight planets which revolve around the Sun.
- The order of planets in their distance from the Sun: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. So, Uranus is the seventh planet from the Sun.
Question 6
Which of the following planets has the most extensive ring system?
SOLUTION
Solution : C
The planet Saturn has the most extensive ring system in the Solar System. Its rings are made up of rock, dust and icy material. Pluto does not possess any rings around it. However, Jupiter and Uranus possess a system of rings which are mostly composed of dust and ice. But, they are not as extensive and complex as that of Saturn; rather, are faint.
Question 7
Match the entries of column A with column B.
| A | B |
| (a) Rocky planet | (i) Pluto |
| (b) Gas giant | (ii) Saturn |
| (c) Ice giant | (iii) Uranus |
| (d) Dwarf planet | (iv) Venus |
SOLUTION
Solution : B
- Venus is known as the "rocky" or "terrestrial" planet as it is similar to Earth in composition.
- Saturn is known as the gas giant because it is made up of gases and it is too huge that about 760 earths can fit into it.
- Uranus is known as an ice giant because it is made up of ice and it is too huge that 63 earths can fit into it.
- Pluto is known as the dwarf planet because of its size as it is even smaller than the Earth's moon.
Question 8
Identify Mars among the following planets?
SOLUTION
Solution : B
Mars is the fourth planet from the Sun and the second smallest planet in the Solar system.
It has a reddish appearance due to which it is known as the "Red Planet".
Question 9
___ is very similar to Earth in terms of size.
SOLUTION
Solution : B
- Venus is very similar to Earth in terms of size and mass. Due to this Earth and Venus do often get called "Planetary Twins".
Question 10
If the Northern Hemisphere is tilted towards the Sun, then the region present in that hemisphere will experience ___.
SOLUTION
Solution : B
- If Northern Hemisphere is tilted towards the Sun then the region present in that hemisphere will receive direct sunlight and will experience summer.
- This is the reason why we experience summer in June and winter in December in Northern Hemisphere.