The Earth and the Sun

Q. An imaginary line around which an object rotates is called the .

1. orbital
2. shell
3. orbit
4. axis

Q. Which was the first planet to be discovered using a telescope?

1. Mars
2. Jupiter
3. Saturn
4. Uranus

Q.

Mention the aim of Forest (Conservation) Act.

Q.

Explain why there is a need for a variety of animals and plants in a forest.

Q. My energy is used by plants to make their food. I am a source of renewable energy. Who am I?

1. Coal
2. Wind
3. Electricity
4. Sun

Q. The region that lies above the equator is called the:

1. Northern hemisphere
2. Southern hemisphere
3. Western hemisphere
4. Eastern hemisphere

Q.

The Equator divides the Earth into _______ and _______ hemispheres.

1. Northern, Southern

2. Top, Bottom

3. Upper, lower

4. Western, Eastern

Q.

Which of the following statements about the sun are false?

1. It is made up of gases.
2. It generates its own light.
3. Sun is a star.
4. Sun is a big planet.

Q.

The Sun is the only ____ in our solar system around which planets revolve.

1. star
2. meteor
3. satellite
4. comet

Q. What is the destruction of forests called?

1. Chopping
2. Firing
3. Deforestation
4. Blazing

Q.

_____ is the imaginary line which is equidistant from the two poles and divides the Earth into equal halves.

1. Capricorn

2. Equator

3. Axis

4. Tilt

Q. Label the different layers of the Earth.

1. Crust
2. Mantle
3. Outer core
4. Inner core

Q.

What is the reason that planets and other space objects stay in our Solar System?

1. Stars of another galaxy

2. Planets exert gravity on each other

3. Tilt of orbit around Sun

4. Sun's gravity

Q. What keeps all planets, dwarf planets, asteroids, comets and other bodies bound to the solar system?

1. Their shape
2. Their colour
3. Their size
4. Gravitational pull from the Sun

Q. What keeps all planets, dwarf planets, asteroids, comets and other bodies bound to the solar system?

1. Their shape
2. Their colour
3. Gravitational pull from the Sun
4. Their size

Q.

State whether the following statement is true or false:

Large-scale deforestation increases carbon dioxide in the air.

1. True
2. False

Q.

The Earth's axis is tilted at an angle of ____.

1. 45 degree
2. 23.5 degree
3. 90 degree
4. 20.5 degree

Q.

___ is the imaginary line which is equidistant from the two poles and divides the Earth into equal halves.

1. Line

2. Axis of Capricorn

3. Axis

4. Equator

Q. Write any two differences between a planet and a star.

Q.

Which of the following celestial objects emit light on their own?

1. Sun

2. Asteroids

3. Planets

4. Satellites

Q. Describe in short the various non-living components of environment.

Q. ntx and y component of a vector are 100N and 100N . Find the 2components if vector is rotated by:n nt1)15degree clockwisen nt2)15degree anticlockwisen

Q. The component of vector A=2i+j in the direction of vector of i+j is

Q. An imaginary line around which an object rotates is called the .

1. orbital
2. shell
3. orbit
4. axis

Q. "Sun is the only star in the Solar System". The statement is true or false?

Q. Which of the following components makes our Earth so special for us to live?

1. Air
2. Water
3. Land
4. All of the above.

Q. We depend on light energy for our food. True or false?