Sun

Q.

Amount of solar energy received on the earth’s surface per unit area per unit time is defined a solar constant. write its dimensions

1. $M{L}^0{T}^{-3}$

2. $ML{T}^{-2}$

3. $M{L}^0{T}^{-1}$

4. $M{L}^2{T}^{-2}$

Q.

Our Solar system is located in ________ galaxy.

1. Andromeda

2. Milky way

3. Whirlpool

4. Black eye

Q.

Which of the following energy is not derived from the sun?

1. fossil fuels

2. geo-thermal energy

3. nuclear energy

4. bio-mass

Q.

Why energy is released in nuclear fusion?

Q.

Which of the following is not a source of biomass fuel?

1. Nuclear Energy

2. Gobar gas

3. Coal

4. Wood

Q.

If in a nuclear fusion process, the masses of the fusion nuclei be $m_1$ and $m_2$ and the mass of the resultant nucleus be $m_3$, then

1. $m_3=m_1+m_2$

2. $m_3=m_1-m_2$

3. $m_3<m_1+m_2$

4. $m_3>m_1+m_2$

Q.

Which of the following resource is/are not exhaustible?

1. fossil fuels

2. wind energy

3. hydro energy

4. nuclear energy

Q.

A solar water heater cannot be used to get hot water on

1. a sunny day

2. a cloudy day

3. a hot day

4. a windy day

Q.

The ________ (sun/ moon) is the main source of light on the earth.

Q.

Plants store solar energy in the form of

1. thermal energy

2. bioenergy

3. electric energy

4. chemical energy

Q.

The position of the Sun is fixed in the Universe.

1. False

2. True

Q.

What is the temperature on Galaxy

Q.

A device that utilises solar energy for cooking purpose is is called

1. Solar water heater

2. Solar cooker

3. Solar cell panel

4. None of these

Q. Show that the sun is the ultimate source of energy.

Q. Which of the following statement is true for sun?

1. Sun revolves around the centre of the "Milky Way" galaxy.
2. Sun is a yellow coloured star.
3. Sun's surface temperature is around 6000° C.
4. Sun revolves around Earth.

Q. Celestial bodies do not form umbra and penumbra.

1. True
2. False

Q.

Why is nuclear binding energy released?

Q.

Green plants convert _____energy into chemical energy

Q.

What is mean neuclear energy

Q.

The most important naturally occurring source of heat is the

1. Earth

2. Sun

3. Moon

4. Stars

Q.

___ is the ultimate source of energy.

Q. The ultimate source of energy for the earth is :

1. wind energy
2. hydel energy
3. chemical energy
4. solar energy

Q.

___ is the capacity to do work.

Q. The solar energy of the sun is trapped in the form of chemical energy by the process of photosynthesis.

1. True
2. False
3. Ambiguous
4. Data insufficient

Q. Identify the wind instruments from the following musical instruments:

1. Clarinet
2. Harmonica
3. Flute
4. Violin
5. Piano
6. Guitar
7. Trumpet
8. Bagpipe

Q. The Sun gives us ________ and _________ energy.

1. sound, light
2. heat, sound
3. heat, light
4. light, wind

Q.

a) What is a solar cell made up of?
b) State the energy transformation that takes place in a solar cell.
c) Give any two uses of the solar cells.

Q.

Nuclear fusion reactions happen spontaneously in _____.

1. the eruption of a volcano

2. the core of the earth

3. the commercial nuclear reactor

4. the atmosphere of the sun

Q.

Solar energy can be used to produce

1. electrical energy

2. mechanical energy

3. heat energy

4. all of the above

Q.

Since your birth, how many times have you gone around the Sun ?