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3 years ago

Explain the process of sedimentation.

1 answer:

7 0

Sedimentation is a phenomenon in which the particles settle down in the fluid in which it was entrained. The particles come to rest against a barrier. This phenomenon is due the various forces acting on the particles these forces can be centrifugal force, gravity electromagnetism. Sedimentation may be related to objects of various sizes. The sediments can be as small as the dust particles or can as large as the rock in flowing water. Even small molecules have the sufficient mount of force to produce sediments.

In chemistry sedimentation is used to measure the size of the particles.

In geology sedimentation is the settlement of particles carried away by wind.

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What two recurring events in Earth’s history have an impact on the carbon cycle?

inessss [21]

The carbon cycle is affected by a variety of factors, and happens through different processes. The processes can be divided into two, which are biological processes and geological processes. The biological aspect covers the use and production of carbon by living organisms. The geological aspect covers physical processes such as volcanic eruptions, and weathering of rocks, which may result to release of carbon back to the atmosphere. However, both of these aspects can be affected by recurring events in Earth's history. One is the switching between glacial and interglacial periods, and the other one is the seasonal changes. Glacial periods can lead to lower temperatures and lower carbon levels in the atmosphere. In contrast to this, warmer interglacial periods result to higher carbon levels primarily due to an abundance of life. Seasonal changes have a similar effect that can be observed at a shorter time. Human activities such as burning of fossil fuels and deforestation may also bring changes to the carbon cycle.

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3 years ago

What are the precautions that should be token when using a photometer? please help me

Maksim231197 [3]

Answer:

PRECAUTIONS FOR USING A SPECTROPHOTOMETER :

1 . By allowing the lamps and electronics to warm up

2.By cleaning up any spills inside the cuvette compartment

3.By carrying out the set-up procedure in the correct order

4.By ensuring that %T or transmission is used as appropriate

5.By closing the door to the cuvette compartment before reading the result

6.By performing calibration checks after set up

7.By wiping fingerprints and spilt sample off the outside of the cuvette before measuring

8.By using the correct wavelength

PRECAUTIONS FOR USING A FRAME PHOTOMETER:

1. Do not move or Carry the unit when in use or connected to the mains electricity supply

2. There should be sufficient time for the chimney to cool before handling

3. Do not use acetylene with the flame photometer

4. Over adjustment of the fuel valve will cause excess flame

Do not position the product so that it is difficult to disconnect from the mains supply

5. Do not cover the chimney whilst in use.

6. Do not block or obstruct ventilation slots /airways

7. Do not operate or handle any part of the product with wet hands

I HOPE THIS WILL HELP AND IF NOT LET ME KNOW

8 0

2 years ago

How have increased carbon dioxide levels and temperatures affected living organisms?

d1i1m1o1n [39]

Answer:

Carbon dioxide is a gas which is released in the atmosphere as greenhouse gas, burning of fossil fuel, released in respiration process. Rise in the levels of carbon dioxide and other gases has resulted in increase in global temperatures. Increase in carbon dioxide and temperatures are responsible for weather fluctuations and global warming.

Weather fluctuation means untolerated heat and lack of precipitation or rain. Weather fluctuations will affect seasons. Seasons are necessary for maintaining the life cycle of organisms. Inappropriate seasons due to climatic change will affect the life of living organisms.

Global warming is an issue which is mainly due to release of hot heat trapping gases from green house and other sources, increasing the atmospheric temperature. This will result in melting of ice from glaciers in world. The inhabiting animals living in the glaciers will suffer a lot from this as they cannot tolerate warm climatic conditions.

5 0

3 years ago

Read 2 more answers

How can the hypothalamus receive signals from both the nervous and endocrine systems?

levacccp [35]

Answer:

it is tye master of the master gland bro

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3 years ago

Classification of carpet grass from kingdom to class level

Bumek [7]

Answer:i dont eve k

Explanation:

becouse i dont

7 0

3 years ago