Earth and Universe Quiz

Read the following assertion and reson for the assertion. Now choose the correct option: Assertion (A): Mercury has no moons. Reason (R): Mercury is too close to the Sun, and the Sun’s gravity may prevent it from holding moons.

1. A and R are both true, and R correctly explains A.
2. A is true, R is true, but R does not explain A.
3. A is true, R is false.
4. A is false, R is true

Answer: (a) A and R are both true, and R correctly explains A.

Which planet does not belong to the group based on its type?

1. Mars
2. Earth
3. Mercury
4. Uranus

Answer: (d) Uranus

Which is the correct matching? Planet Unique Feature A Saturn 1 Rotates on its side B Uranus 2 Largest storm (Great Red Spot) C Jupiter 3 Most prominent rings D Venus 4 Hottest planet due to thick CO₂

1. A-4, B-1, C-3, D-2
2. A-2, B-3, C-1, D-4
3. A-1, B-2, C-4, D-3
4. A-3, B-1, C-2, D-4

Answer: (d) A-3, B-1, C-2, D-4

Which of these effects is not caused by the Earth's revolution?

1. Change in seasons
2. Varying lengths of day and night
3. Sun rising in the east and setting in the west
4. Different constellations visible at different times of year

Answer: (c) Sun rising in the east and setting in the west

Why do we always see the same side of the Moon from Earth?

1. The Moon rotates once for every orbit it makes around Earth
2. The Moon revolves too fast to show other sides
3. The Moon does not rotate on its axis
4. The Earth’s shadow blocks the Moon's other side

Answer: (a) The Moon rotates once for every orbit it makes around Earth

Choose the set with only true statements: 1. The Sun is a star. 2. The Moon causes tides on Earth. 3. All planets have moons. 4. Lunar eclipse occurs during a New Moon.

1. 1 & 2
2. 2 & 4
3. 1, 3 & 4
4. All are true

Answer: (a) 1 & 2

NASA sends a satellite to observe weather patterns and track rainfall in Brazil. Which type of satellite is this, and what is its purpose?

1. Natural satellite, for communication
2. Artificial satellite, for observation
3. Artificial satellite, for tides
4. Natural satellite, for GPS

Answer: (b) Artificial satellite, for observation

Zara was shown two pictures: one of the Sun and another of a bright star that doesn’t seem to change its position in the night sky. She called it the Pole Star. Select the INCORRECT statement regarding these celestial bodies:

1. The Sun is a medium-sized star that gives us heat and light.
2. The Pole Star always appears in the same position in the night sky.
3. The Pole Star is much closer to the Earth than the Sun.
4. The Sun appears to rise and set due to Earth’s rotation.

Answer: (c) The Pole Star is much closer to the Earth than the Sun.

A group of scientists placed identical plants in four different rooms. All rooms had water and soil, but the conditions were different. After two weeks, only the plant in Room A looked healthy and green. Based on this, what can we conclude about the role of the Sun? Room Light Source Temperature (°C) A Sunlight 25 B LED bulbs (no heat) 25 C No light 25 D Sunlight 0

1. The Sun is only important for keeping the air warm.
2. The Sun provides both light and warmth, which plants need to grow
3. Plants do not need light if the temperature is warm enough.
4. Only artificial light can help plants grow.

Answer: (b) The Sun provides both light and warmth, which plants need to grow

Read the given statements and select the option that correctly identifies whether they are true or false: 1. The Moon produces its own light. 2. A solar eclipse occurs when the Moon comes between the Earth and the Sun. 3. The full Moon appears once in about 29 days.

1. 1: True, 2: False, 3: True
2. 1: False, 2: True, 3: True
3. 1: False, 2: False, 3: True
4. 1: True, 2: True, 3: False

Answer: (b) 1: False, 2: True, 3: True