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.

Explanation

The energy extracted from the vaporised liquid as evaporation occurs will decrease the temperature of the liquid, resulting in a process known as evaporative cooling.

Explanation

Water reuse is the method of recycling treated wastewater for beneficial purposes, such as agricultural and landscape irrigation, industrial processes, toilet flushing, and groundwater replenishing

Explanation

The most popular renewable energy sources currently are:

1.      Solar energy

2.      Wind energy

3.      Hydro energy

4.      Tidal energy

5.      Geothermal energy

6.      Biomass energy

RK12-12-2022

Explanation

Head is the change in water levels between the hydro intake and the hydro discharge point.

It is a vertical height measured in metres.

Explanation

In mechanics, acceleration is the rate of change of the velocity of an object with respect to time.

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RY12-02-23

Explanation

Many practical and proprietary methods exist to avoid plastic shrinkage cracking, including various curing methods, power floating, the use of cold water, shrinkage reducing admixtures, and fibres.

Covering concrete with plastic sheets or wet burlap is the most common practical concrete curing method.

Explanation

Ground water recharge includes recharge as a natural part of the hydrologic cycle and human-induced recharge, either directly through spreading basins or injection wells, or as a consequence of human activities such as irrigation and waste disposal.

Explanation

Desalination is the process by which the dissolved mineral salts in water are removed.

Explanation

Magnetite is not a power resource.

Magnetite is a mineral whose primary component is an iron oxide that contains equal amounts of iron(II) and iron(III).

AGM 28.02.28