Environmental Studies · Physics

Solar Radiation and Energy

926 Questions

Enhance your general science knowledge with these questions on solar radiation and energy. The topics span solar thermal power plants, photovoltaic devices, and the sun's energy output. This material is useful for environmental studies and physics.

Solar energy conversionSun luminosity and compositionAtmospheric reflectionSolar thermal technology

Solar Radiation and Energy Questions

Multiple choice physics sources of energy wave energy tidal energy wave power and tidal power

What is known as Ocean thermal energy?

  1. The Sun's heat warms the surface water a lot more than the deep ocean water which creates ocean's naturally available temperature gradient.

  2. The Moon's heat warms the surface water a lot more than the deep ocean water which creates ocean's naturally available temperature gradient.

  3. The Solar cell's heat warms the surface water a lot more than the deep ocean water which creates ocean's naturally available temperature gradient.

  4. None
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Temperature gradient of the water with deep ocean being cold and tropical surface water being warm due to the Sun's heat is the ocean thermal energy.

Multiple choice physics in the world of stars evolution and end stages of stars life cycle of stars stars

After the initial contraction and when the temperature rises high enough, energy is radiated from the surface in the form of:

  1. short-wavelength red light

  2. short-wavelength blue light

  3. long-wavelength red light

  4. long-wavelength orange light
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

As a protostar contracts, it heats up and begins to radiate energy. Because the surface temperature is relatively low compared to mature stars, the radiation is primarily in the infrared or long-wavelength red spectrum.

Multiple choice nanoscience and nanotechnology nanotechnology logic gates

Which of the following element is a major constituent in the conventional sources of energy ?

  1. Hydrogen

  2. Oxygen

  3. Carbon

  4. Aluminium
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Conventional sources of energy include coal, petroleum, natural gas, wood etc. Carbon is their main constituent.

Multiple choice botany the leaf mechanism of absorption mineral absorption significance of transpiration

Water is ideal material for disposal of excess solar energy because

  1. Water is easily available and its specific heat is high

  2. Water evaporates from leaf surface and its latent heat is high

  3. Water is general solvent

  4. Upward movement of water creates a difference in water potential
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

When plants use solar energy for the synthesis of their food, only a small part of solar energy used,  rest of the part of this energy evaporate from the surface of leaves by the process of transpiration and due to its high latent heat. It is the best material for disposing excess  solar energy.

So the correct answer is B. 

Multiple choice commercial applications sources of water conservation of natural and energy resources energy conservation and sources importance of the conservation of natural resources reduce, recycle, reuse

The economically friendly measure to conserve solar energy is

  1. Sugarcane plantation

  2. Energy plantation

  3. Both (A) and (B)

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Photosynthesis is the process by which green plants and certain other organisms transform light energy into chemical energy. Photosynthesis in green plants harnesses the energy of sunlight to convert carbon dioxide, water, and minerals into organic compounds and gaseous oxygen. Hence, planting green trees is an easy way to conserve solar energy.

Multiple choice biology physical resources air and winds wind energy air as a natural resource

Solar radiation heats up

  1. Land faster than the water bodies

  2. Land slower than the water bodies

  3. Both land and water equally

  4. Neither land nor water
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The land has compactly arranged molecules through which conduction takes place and as it is an insulator heat, the heat remains on the surface of the earth i.e. land whereas water has loosely packed molecule heat is transferred by convection and thus it takes a longer time to heat up. Also, water has a higher specific heat capacity, meaning that it requires more energy to heat water to the same temperature as a piece of land. Water also reflects more incoming radiation. The land is dark, rough, and solid, which all contribute to the absorption of the radiation. Unlike water, the land is unable to retain heat for as long as water.

So, the correct answer is 'Land faster than the water bodies'.

Multiple choice evs deficiency diseases need for nutrients nutrients needed by the body balanced diet and malnutrition food for health nutrition and its deficiency nutrition and its need

The radiant energy is stored in the form of chemical energy in

  1. DNA

  2. stored food

  3. RNA

  4. ATP
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Chemical energy is stored in the bonds that connect atoms with other atoms and molecules with other molecules. Because chemical energy is stored, it is a form of potential energy. When a chemical reaction takes place, the stored chemical energy is released. Chemical Energy - is really a form of potential energy and is the energy stored in food or chemical combinations. Radiant Energy - is a combination of heat and light energy.

So, the correct option is 'stored food'.

Multiple choice standardized measurement measurement of physical quantities need of unit for measurement measurements and experimentation physics

The amount of energy emitted per unit time is called _______ .

  1. Solar luminosity

  2. Luminous intensity

  3. Luminous flux

  4. Solar intensity
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Solar luminosity is defined as the total amount of energy emitted by a star per unit time. Luminous flux and intensity relate to human perception of light, not total energy emission.

Multiple choice biology solar equipment renewable and non-renewable resources renewable and non-renewable sources of energy production of electricity from solar energy

The device that uses solar energy in the form of heat is

  1. Solar light

  2. Solar panel used in artificial satellites

  3. Solar cell

  4. Solar cooker
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A solar cooker is a device which uses the energy of direct sunlight to heat or cook. A mirrored surface with high specular reflectivity is used to concentrate light from the sun on to a small cooking area. Depending on the geometry of the surface, sunlight can be concentrated by several orders of magnitude producing temperatures high enough to melt salt and smelt metal. 

Thus heat of solar energy is used in cooking with a solar cooker.

Multiple choice biology solar equipment renewable and non-renewable resources renewable and non-renewable sources of energy production of electricity from solar energy

Identify one of the uses of solar heater in the following.

  1. Conversion of solar energy into electrical energy

  2. Providing energy for artificial satellites

  3. Desalination of marine water

  4. Using in automatic streelights
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

There are two primary means of achieving desalination using solar energy, through a phase change by thermal input, or in a single phase through mechanical separation. Phase change (or multi-phase) can be accomplished by either direct or indirect solar distillation. Single phase is done by the use of photovoltaic cells to produce electricity to drive pumps.

Multiple choice biology solar equipment renewable and non-renewable resources renewable and non-renewable sources of energy production of electricity from solar energy

The energy generated at the core of the sun is carried to surface by photons in about a million year because

  1. sun is a huge body

  2. photons travel very fast

  3. photons bounce so many times through the dense materials

  4. photons travel with the speed of light
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Photons generated in the Sun's core undergo a random walk, colliding repeatedly with dense plasma particles, which significantly delays their journey to the surface.