Amount of solar energy received on the earth’s surface per unit area per unit time is defined a solar constant. write its dimensions
Our Solar system is located in ________ galaxy.
Which of the following energy is not derived from the sun?
Why energy is released in nuclear fusion?
Which of the following is not a source of biomass fuel?
If in a nuclear fusion process, the masses of the fusion nuclei be and and the mass of the resultant nucleus be , then
Which of the following resource is/are not exhaustible?
A solar water heater cannot be used to get hot water on
a sunny day
a cloudy day
a hot day
a windy day
The ________ (sun/ moon) is the main source of light on the earth.
Plants store solar energy in the form of
The position of the Sun is fixed in the Universe.
What is the temperature on Galaxy
A device that utilises solar energy for cooking purpose is is called
Solar water heater
Solar cell panel
None of these
- Sun revolves around the centre of the "Milky Way" galaxy.
- Sun is a yellow coloured star.
- Sun's surface temperature is around 6000° C.
- Sun revolves around Earth.
Why is nuclear binding energy released?
Green plants convert _____energy into chemical energy
What is mean neuclear energy
The most important naturally occurring source of heat is the
- wind energy
- hydel energy
- chemical energy
- solar energy
- Data insufficient
- sound, light
- heat, sound
- heat, light
- light, wind
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.
Nuclear fusion reactions happen spontaneously in _____.
the eruption of a volcano
the core of the earth
the commercial nuclear reactor
the atmosphere of the sun
Solar energy can be used to produce
all of the above
Since your birth, how many times have you gone around the Sun ?