Wetlands Ecosystems Importance
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Questions and Answers

Which property is true for solids?

  • Particles are packed in a regular pattern. (correct)
  • They have large spaces between particles.
  • Particles can move freely in any direction.
  • They take the shape of their container.

    • In gases, particles are very close together and can only vibrate in place.

    False

    What allows liquids to take on the shape of their container?

    Particles can move and vibrate past one another.

    In solids, the particles vibrate in a __________ position.

    <p>fixed</p> Signup and view all the answers

    Match the states of matter with their characteristics:

    <p>Solids = Fixed shape and small spaces between particles Liquids = Flow and take the shape of their container Gases = No fixed shape and particles far apart from each other All States = Made up of particles that move</p> Signup and view all the answers

    What function do wetlands NOT provide?

    <p>Wind energy generation</p> Signup and view all the answers

    Wetlands only benefit fish and do not support any other types of animals.

    <p>False</p> Signup and view all the answers

    In what two seasons do wetlands play a crucial role in maintaining water levels in rivers and streams?

    <p>During heavy rains and dry seasons</p> Signup and view all the answers

    Wetlands act like giant __________, storing water and preventing flooding.

    <p>sponges</p> Signup and view all the answers

    Match the following functions of wetlands with their descriptions:

    <p>Habitat = Supports diverse species of plants and animals Water filtration = Cleanses water by removing contaminants Flood prevention = Stores excess rainfall Water supply = Maintains flow in rivers and streams during dry periods</p> Signup and view all the answers

    What is the purpose of filter paper in separating mixtures?

    <p>To catch larger particles while allowing liquid to pass</p> Signup and view all the answers

    The curry powder will pass through the filter paper when mixed with water.

    <p>False</p> Signup and view all the answers

    What equipment do you need to separate a mixture by filtering?

    <p>funnel, filter paper, beakers, teaspoon</p> Signup and view all the answers

    When filtering a mixture of curry powder and water, the ______ will remain on the filter paper.

    <p>curry powder</p> Signup and view all the answers

    Match the component with its function in the filtering process:

    <p>Filter paper = Catches solid particles Funnel = Guides the mixture Solvent = Dissolves the solute Beakers = Holds the liquid</p> Signup and view all the answers

    What happens to biodiversity when wetlands are destroyed?

    <p>It decreases</p> Signup and view all the answers

    Wetlands help improve water quality by filtering harmful substances from the water.

    <p>True</p> Signup and view all the answers

    What term describes the variety of different kinds of plants, animals, and other living things in an ecosystem?

    <p>biodiversity</p> Signup and view all the answers

    What is the primary purpose of filtering?

    <p>To separate larger substances from dirty water</p> Signup and view all the answers

    Wetlands can break down solid _____ waste and make it harmless.

    <p>toilet</p> Signup and view all the answers

    Match the following terms with their definitions:

    <p>Biodiversity = The variety of life in an ecosystem Water Quality = How safe our water is to use Microorganisms = Very tiny organisms that break down waste Wetlands = Ecosystems that filter and clean water</p> Signup and view all the answers

    Settling helps to remove germs from dirty water.

    <p>False</p> Signup and view all the answers

    What happens to heavier substances in dirty water over time?

    <p>They settle to the bottom of the container.</p> Signup and view all the answers

    The process of adding crushed seeds helps the water to __________ faster.

    <p>settle</p> Signup and view all the answers

    Match the following water purification methods with their descriptions:

    <p>Filtering = Separates larger substances from water Settling = Allows heavier solids to drop to the bottom Crushed seeds = Accelerates the settling process</p> Signup and view all the answers

    What is water purification?

    <p>A process that removes germs and harmful substances from water</p> Signup and view all the answers

    Water that appears clean is always safe to drink.

    <p>False</p> Signup and view all the answers

    What do many people in South Africa have to collect their drinking water from?

    <p>Contaminated water sources such as rivers and water holes.</p> Signup and view all the answers

    The process of removing larger substances from dirty water using a sieve is called __________.

    <p>sieving</p> Signup and view all the answers

    Match the following terms with their definitions:

    <p>Purify = To make something clean and safe to drink Contaminated = Contains harmful substances or germs Sieve = A tool used for separating larger substances from liquids Germs = Microscopic organisms that can cause illness</p> Signup and view all the answers

    What happens when you add marbles to a beaker filled with water?

    <p>The water level rises due to displacement.</p> Signup and view all the answers

    Particles of matter do not have spaces between them.

    <p>False</p> Signup and view all the answers

    What effect does heating have on the movement of particles?

    <p>Heating increases the energy of particles, making them move faster.</p> Signup and view all the answers

    Particles are always ______ or vibrating.

    <p>moving</p> Signup and view all the answers

    Match the following terms with their definitions:

    <p>Matter = Made up of tiny particles that are too small to see. Particles = The smallest parts of a substance. Displacement = When an object causes the level of liquid to rise. Vibration = The movement of particles due to energy.</p> Signup and view all the answers

    What is the primary purpose of decanting?

    <p>To separate settled substances from liquid</p> Signup and view all the answers

    Boiling water kills all germs and parasites immediately.

    <p>False</p> Signup and view all the answers

    What chemical is commonly used to purify water?

    <p>Chlorine</p> Signup and view all the answers

    Municipalities use _____ screens to trap larger debris in water purification.

    <p>metal</p> Signup and view all the answers

    Match the water purification method to its main function:

    <p>Decanting = Separates liquid from solids Boiling = Kills germs and parasites Adding Chlorine = Purifies by chemical means Filtration = Removes fine particles</p> Signup and view all the answers

    What is a risk of adding too much chlorine to water?

    <p>It can make the water toxic</p> Signup and view all the answers

    What happens to boiled water after it has cooled down?

    <p>It can be consumed safely.</p> Signup and view all the answers

    Adding purification tablets is an alternative method to kill germs in water.

    <p>True</p> Signup and view all the answers

    What is the primary chemical used to kill germs in water purification?

    <p>Chlorine</p> Signup and view all the answers

    Municipalities use physical screens to remove small objects from dirty water.

    <p>False</p> Signup and view all the answers

    What is the substance that settles at the bottom of the container and is called sludge?

    <p>Mud or muddy substance</p> Signup and view all the answers

    Chlorine and ammonia combined is called __________.

    <p>chloramine</p> Signup and view all the answers

    Match the following steps in water purification with their functions:

    <p>Metal screens = Trap large objects Spiralling funnel = Add minerals and remove smaller substances Air bubbling = Improve taste and feel Sand filter = Remove small water plants and germs</p> Signup and view all the answers

    What is added to the water at regular intervals to kill germs after chlorination?

    <p>Chloramine</p> Signup and view all the answers

    Purification tablets can be used to mix with dirty water to kill germs.

    <p>True</p> Signup and view all the answers

    What happens to chlorine's effectiveness over time?

    <p>It decreases or is only effective for a short while.</p> Signup and view all the answers

    Study Notes

    Importance of Wetlands

    • Wetlands serve as crucial habitats and breeding sites for diverse species, including birds, frogs, and fish.
    • They provide essential water sources for various plants and animals, contributing to local ecosystems.
    • Wetlands act as natural filters, cleansing water by removing both soluble and insoluble pollutants.
    • They function like sponges, absorbing excess water to prevent flooding during heavy rainfall.
    • During dry periods, wetlands help maintain river and stream flows by releasing stored water.

    Impact of Wetland Loss

    • Human population growth leads to habitat destruction, resulting in a loss of 50% of global wetlands over the past century.
    • Wetland loss significantly reduces biodiversity, as many species lose their natural habitats, leading to population declines or displacement.

    States of Matter: Solids, Liquids, and Gases

    • Matter is composed of particles that have varying arrangements and movement depending on their state.

    Solids

    • Particles are tightly packed in a fixed pattern with minimal spacing, restricting movement.
    • They vibrate in place, contributing to the solid structure and fixed shape of materials like bricks.

    Liquids

    • Particles are closely packed but have more space between them compared to solids, allowing for greater freedom of movement.
    • Liquids flow and take the shape of their containers due to the less rigid arrangement of particles.

    Gases

    • Particles are spaced far apart and move freely in all directions at high speeds.
    • Gases lack a definite shape or volume, filling their containers regardless of size.

    Biodiversity and Wetlands

    • Destruction of wetlands disrupts habitats, leading to decreased biodiversity as many species face extinction or migration challenges.

    Water Quality and Wetlands

    • Wetlands enhance water quality by filtering harmful substances like soaps and fertilizers from water.
    • Microorganisms in wetland ecosystems break down waste, helping to purify water supplies.

    Matter and Particle Movement

    • Matter consists of small particles with spaces between them, influencing the ability to mix substances like water and stones.
    • Particle movement is dependent on energy; heating increases movement and can lead to phase changes.

    Methods of Water Purification

    • Clean water is essential for survival, and many people globally lack access to safe drinking water.

    Sieving

    • A sieve separates larger impurities from water but does not remove harmful microorganisms.

    Filtering

    • A cloth filter can remove larger particles but does not eliminate germs, rendering the water unsafe for drinking.

    Settling

    • Allowing dirty water to stand lets solids settle at the bottom, while cleaner water remains on top.

    Water Purification Techniques

    • Decanting: Separates clear liquid from settled solids by carefully pouring it into another container.
    • Boiling: Kills germs and parasites, making water safer; requires cooling time afterward.
    • Chemical Treatment: Chlorine and purification tablets are added to eliminate pathogens in clean water.

    Municipal Water Purification Processes

    • Municipalities use filtration through metal screens to remove debris before treating water with sand filters and chemicals like chlorine.
    • To ensure the removal of remaining germs, chloramine is periodically added to maintain water quality.

    Importance of Clean Water

    • Access to clean water is vital; contaminated sources pose health risks due to invisible germs and parasites present even in seemingly clear water.

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    Description

    Explore the significance of wetland ecosystems in this quiz. Discover how they provide habitats for various species, serve as water sources, and filter pollutants. Understand their crucial role in preventing flooding and supporting biodiversity.

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