Explanation

• A Periscope is an optical instrument used to observe objects that are not in direct line of sight.
• Such as monitoring the surface of the water from a submarine.

Explanation

The Indian Space Research Organization (ISRO)  is the national space agency of India.

Explanation

The telescope is undoubtedly the most important investigative tool in astronomy.

A celestial body that revolves around a planet is known as a natural satellite.

Explanation

The nucleus, formed by a nuclear membrane around a fluid nucleoplasm, is the control center of the cell.

Threads of chromatin in the nucleus contain deoxyribonucleic acid (DNA), the genetic material of the cell.

Explanation

The Japan Aerospace Exploration Agency is the Japanese national aerospace and space agency.

Explanation

• Nitrogen (N2) makes up about 78% of the Earth's atmosphere.
• Making it the most abundant gas in the atmosphere.

Explanation

Non-renewable energy sources:

• Oil
  
• Nuclear energy
• Petroleum
• Natural gas & coal

Renewable sources of energy:

• Solar energy
• Wind energy
• Hydroelectric power
• Biomass energy
• Geothermal energy
• Tidal energy

Explanation

• Sublimation is the transition of a substance from the solid to the gas phase without going through the liquid phase.
• Glucose and Sodium Chloride do not sublime, as they require a liquid phase transition before turning into a gas.

Here are the some solid sublime material:

• Iodine
• Camphor or Dry ice

Explanation

The roadway would cause diffuse reflection due to its rough surface

some examples where diffused reflection

• Desert sand,
• disturbed water surface,
• and rough roads  
  

Explanation

• Sound energy is the energy created by the vibration of particles, such as molecules or atoms, as they oscillate back and forth.
• This vibration creates a disturbance that travels through a medium, like air, water, or solids, and is perceived as sound.