Question

3) Define a) Work b) Energy
4) Define pollution.
5) Distinguish between evaporation and condensation.
6) Draw a diagram of sea breeze andand breeze,
7) How do we get energy from food.​

Answer 1

Explanation:

The principle of work and kinetic energy (also known as the work–energy principle) states that the work done by all forces acting on a particle (the work of the resultant force) equals the change in the kinetic energy of the particle.

Answer 2

Answer:

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Explanation:

• a)Work= A work is the energy transferred to or from an object via the application of forces along a displacement.

b) Energy = Energy is simply the capacity of doing work

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Pollution= Pollution is the introduction to the harmful material into the environment

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• Evaporation = Evaporation is the cooling process.
• Evaporation has a phase change from liquid to gas
• heat energy is absorbed by the liquid causing it becomes a gas

Condensation =

• it has a phase changes from gas to liquid
• condensation is the warming process
• heat energy is released by the gas when it condense into liquid.

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6) referred to the fig given in attachment

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7) Our body digest the food we eat by mixing it with fluid in the stomach . When the stomach digest food the carbohydrates in the food break down into another type of sugar called glucose which provides energy.