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2021-06-17

What are two parts of the water cycle in which contaminants can be introduced?

What are two parts of the water cycle in which contaminants can be introduced?

There are many places where contaminants may enter the water cycle. Contaminants in the air can dissolve into precipitation that falls to Earth. Surface water and groundwater dissolve many chemical substances as they flow to the ocean. These can include salt and toxic chemicals (toxins).

What are the two parts of the water cycle?

The water cycle is often taught as a simple circular cycle of evaporation, condensation, and precipitation.

What are the two main categories of contaminants in water and why are they a problem?

These contaminants may be naturally occurring or man-made. Examples of chemical contaminants include nitrogen, bleach, salts, pesticides, metals, toxins produced by bacteria, and human or animal drugs. Biological contaminants are organisms in water. They are also referred to as microbes or microbiological contaminants.

What is the first step of the water cycle?

The first step of the water cycle is evaporation. About 85% of the water vapor in the air comes from water that evaporated from the oceans. The other 15% comes from evapotranspiration, which is a catch-all term for water that evaporates from over land.

Which is the largest lake in the world class 7?

sea is the largest lake. Ans. 6. Caspian….Free Resources.

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Which is the largest lake in the world answer?

The Top Ten: The Ten Largest Lakes of the World

Rank Name, Location Area (sq. miles)
1. Caspian Sea, Azerbaijan-Russia-Kazakhstan-Turkmenistan-Iran (salt water) 152,239
2. Superior, U.S.-Canada 31,820
3. Victoria, Tanzania-Uganda 26,828
4. Huron, U.S.-Canada 23,010

Which is the largest freshwater lake in the world answer?

Lake Baikal

What does salinity of water Class 7 mean?

The amount of salt dissolved in per unit volume of ocean water is known as the salinity of ocean water.

What are two parts of the water cycle in which contaminants can be introduced?

There are many places where contaminants may enter the water cycle. Contaminants in the air can dissolve into precipitation that falls to Earth. Surface water and groundwater dissolve many chemical substances as they flow to the ocean. These can include salt and toxic chemicals (toxins).

What are the two parts of the water cycle?

The water cycle is often taught as a simple circular cycle of evaporation, condensation, and precipitation.

What are the two main categories of contaminants in water and why are they a problem?

These contaminants may be naturally occurring or man-made. Examples of chemical contaminants include nitrogen, bleach, salts, pesticides, metals, toxins produced by bacteria, and human or animal drugs. Biological contaminants are organisms in water. They are also referred to as microbes or microbiological contaminants.

What is the first indication of a tsunami Class 7?

The first indication that Tsunami is approaching is the rapid withdrawal of water from the coastal region, followed by destructive wave. When this happened on the coast, instead of people going to high ground, they started assembling at the coast to view the miracle.

How tsunami are formed?

A tsunami is a series of extremely long waves caused by a large and sudden displacement of the ocean, usually the result of an earthquake below or near the ocean floor. This force creates waves that radiate outward in all directions away from their source, sometimes crossing entire ocean basins.

What is effect of tsunami?

4. Types of tsunami impacts

Impact People and Animals
Water Currents Moving waves wash out residential settlements, human beings and cattle.
Contamination Contaminated water injures and causes health hazards
Debris/sediments of soil Human fatalities and severe injuries
Gas and Fire Leakage of gas, explosions due to leakage.

What are the 4 main causes of tsunami?

Tsunamis are caused by violent seafloor movement associated with earthquakes, landslides, lava entering the sea, seamount collapse, or meteorite impact.

What is the prevention of tsunami?

Avoid downed power lines and stay away from buildings and bridges from which heavy objects might fall during an aftershock. Stay away until local officials tell you it is safe. A tsunami is a series of waves that may continue for hours. Do not assume that after one wave the danger is over.

What are the types of tsunami?

All Types of Tsunamis

  • Local Tsunami. A local tsunami is a tsunami that causes damage in relatively close proximity to the tsunami-causing event.
  • Regional Tsunami. A regional tsunami is one that causes damage from 100 km to 1,000 km from the underwater event that causes the tsunami.
  • Distant Tsunami.
  • The Distant Tsunami of 2004.

Is a tsunami more dangerous than an earthquake?

Tsunamis can cause great loss of life and property damage in coastal areas. Very large tsunamis can cause damage to coastal regions thousands of miles away from the earthquake that caused them. Beaches, lagoons, bays, estuaries, tidal flats and river mouths are the most dangerous places to be.