Environmental Science: Fill in the Blanks
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Questions and Answers

Which of the following decomposers plays a role in breaking down organic matter?

  • Cotton
  • Aluminium foil
  • Plastic
  • Fungi (correct)

    • Aluminium foil is biodegradable.

    False (B)

    List two benefits of segregating different types of wastes.

    To ensure proper disposal and to prevent disease spread.

    What is the term used for substances that cannot be broken down in nature?

    <p>Non-biodegradable (B)</p> Signup and view all the answers

    The animal that is well adapted to the heat of the desert is the __________.

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

    Fungi and bacteria can be easily seen by the human eye.

    <p>False (B)</p> Signup and view all the answers

    Match the following waste types with their correct disposal method:

    <p>Biodegradable waste = Composting Non-biodegradable waste = Landfill Hazardous waste = Specialized disposal E-waste = Recycling</p> Signup and view all the answers

    What is the primary function of photosynthesis in the environment?

    <p>To convert light energy into chemical energy and produce oxygen.</p> Signup and view all the answers

    The ___ faces the east in the morning.

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

    Match each animal with its corresponding habitat:

    <p>Polar bears = Cold regions Penguins = Antarctic regions Camels = Deserts Fungi = Decomposers in various habitats</p> Signup and view all the answers

    Which vitamins are soluble in fat?

    <p>Vitamins A, D, E, K (B)</p> Signup and view all the answers

    Deficiency of Vitamin B1 causes a disease called Kwashiorkor.

    <p>False (B)</p> Signup and view all the answers

    What disease is caused by the deficiency of Vitamin A in the diet?

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

    The dietary fibres constitute _____% of blood.

    <p>15-20</p> Signup and view all the answers

    Match the following vitamins with their deficiency disease:

    <p>Vitamin A = Nightblindness Vitamin B1 = Beri-Beri Vitamin C = Scurvy Vitamin D = Rickets</p> Signup and view all the answers

    Which of the following is an opaque material?

    <p>A piece of wood (C)</p> Signup and view all the answers

    Pure air is considered an opaque material.

    <p>False (B)</p> Signup and view all the answers

    Define natural materials.

    <p>Natural materials are substances that occur in nature and are not man-made.</p> Signup and view all the answers

    Diffusion occurs fastest in a _____ in another gas.

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

    Match the following substances to their solubility in water:

    <p>Mustard oil = Insoluble Carbon dioxide = Soluble Sugar = Soluble Common salt = Soluble</p> Signup and view all the answers

    Which of the following functions is NOT associated with iron?

    <p>Boosting immunity (C)</p> Signup and view all the answers

    Rickets is a deficiency disease caused by a lack of calcium.

    <p>False (B)</p> Signup and view all the answers

    What disease is primarily caused by protein deficiency in children?

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

    A child with bow legs is likely suffering from __________.

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

    Which of the following states of matter has very little hold on its constituent particles?

    <p>Gaseous (D)</p> Signup and view all the answers

    Match the deficiency disease with its cause:

    <p>Anemia = Iron deficiency Goiter = Iodine deficiency Kwashiorkor = Protein deficiency Rickets = Vitamin D deficiency</p> Signup and view all the answers

    The process of diffusion involves the mixing of particles from two different materials on their own.

    <p>True (A)</p> Signup and view all the answers

    What do you call anything that occupies space and has mass?

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

    A _______ object does not allow light to pass through it.

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

    Match the following terms with their definitions:

    <p>Classification = Grouping objects with similar properties Diffusion = Mixing of particles from two materials Opaque = Does not allow light to pass Matter = Occupies space and has mass</p> Signup and view all the answers

    Which one of the following is not an example of a pure substance?

    <p>Air (C)</p> Signup and view all the answers

    The process of loading slows down the rate of sedimentation.

    <p>False (B)</p> Signup and view all the answers

    What term describes the process of transferring the clear liquid into another container, leaving behind the residue?

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

    A substance that sublimes easily is __________.

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

    Match the following methods with their appropriate descriptions:

    <p>Winnowing = Separating grains from chaff Sedimentation = Allowing particles to settle Decantation = Transferring liquid leaving solids behind Crystallization = Formation of solid crystals from a solution</p> Signup and view all the answers

    Which of the following processes is used to remove tea leaves from tea?

    <p>Sieve (B)</p> Signup and view all the answers

    Winnowing is a method used to separate fine particles from a mixture using a sieve.

    <p>False (B)</p> Signup and view all the answers

    What is the method known as that increases the rate of sedimentation in a solid-liquid mixture?

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

    The process used to separate camphor from salt is known as __________.

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

    Match the following mixtures with their corresponding separation methods:

    <p>Wind = Winnowing Chalk powder and water = Filtration Oil and water = Separating funnel Camphor and salt = Sublimation Separating peas from cooked pulao = Hand picking Sedimentation = Centrifugation</p> Signup and view all the answers

    Which of the following is NOT a characteristic of chemical changes?

    <p>Substances can return to original form (A)</p> Signup and view all the answers

    Deforestation can be considered a reversible change.

    <p>False (B)</p> Signup and view all the answers

    What type of change is produced when an iron rod is bent?

    <p>Physical change</p> Signup and view all the answers

    Burning of fuel is a ________ reversible chemical change.

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

    Match the following changes with their correct category:

    <p>Bending of iron rod = Physical change Burning of paper = Chemical change Cutting of an apple = Physical change Rusting of iron = Slow chemical change</p> Signup and view all the answers

    Which of the following is a physical change?

    <p>Evaporation of water (A)</p> Signup and view all the answers

    Inflating a balloon is an example of an irreversible change.

    <p>False (B)</p> Signup and view all the answers

    What is an example of an irreversible change?

    <p>Growth of a child</p> Signup and view all the answers

    When paper is burned, it undergoes a __________ change.

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

    Match the following changes with their category:

    <p>Melting ice = Physical change Burning wood = Chemical change Inflating a tire = Reversible change Digestion of food = Irreversible change</p> Signup and view all the answers

    Study Notes

    Environmental Awareness and Biology

    • Plastic is non-biodegradable and cannot decompose naturally.
    • Advocating for the use of cloth or paper bags helps reduce plastic pollution.
    • Morning glory flowers bloom at sunrise and close by sunset.
    • Polar bears and penguins thrive in cold climates.
    • Photosynthesis and respiration contribute to atmospheric balance of carbon dioxide and oxygen.

    True or False Statements

    • Herbivores cannot prepare their own food (False).
    • Fungi and bacteria require magnification to be visible (False).
    • Sunflowers orient towards the east in the morning (True).
    • Camels possess no sweat glands to conserve water (True).
    • Soil acts as a vital biotic component of the ecosystem (True).

    Multiple Choice Highlights

    • Biotic environments include producers, consumers, and decomposers.
    • Organisms that utilize light for food synthesis are called autotrophs.
    • Decomposers consist of bacteria and fungi.
    • Aluminium foil is classified as non-biodegradable.
    • Vermicomposting uses worms for organic matter decomposition.
    • Camels have adaptations that allow them to withstand desert heat.

    Nutritional Science

    • Food is essential for the growth and survival of living organisms.
    • Vitamins A, D, E, and K are fat-soluble; B and C are water-soluble.
    • A deficiency in vitamin B1 can lead to Beri-Beri.
    • Vitamin K plays a key role in blood clotting.
    • Dietary fibers constitute 15% to 20% of blood.

    Deficiency Diseases

    • Vitamins and minerals are essential building blocks (True).
    • Our skin does not synthesize Vitamin E from sunlight (False).
    • Phosphorous deficiency can cause anemia (True).
    • Balanced nutrition should contain all essential components (True).
    • Kwashiorkor results from protein deficiency (False).

    Matter and States

    • Classification is the method of grouping objects with similar properties.
    • Matter has both mass and occupies space.
    • Gases consist of particles that have little attraction towards one another.
    • Opaque materials do not allow light to pass through.
    • Perfume diffusion illustrates how scent spreads through air.

    Separation Techniques

    • Hand picking is commonly used for cleaning grains.
    • Common salt is mass-produced via evaporation.
    • Tea leaves are separated from brewed tea using sieving.
    • Sedimentation can be accelerated using a technique called loading.
    • Centrifugation separates fine particles suspended in liquids.

    Physical and Chemical Changes

    • Irreversible changes create permanent alterations in substances.
    • Physical changes can revert to the original state, such as bending an iron rod.
    • Fast reversible changes include the burning of fuel, while rusting is a slow process.
    • New substances formed during chemical changes exhibit different properties.

    General Understanding

    • Fast changes include phenomena like bursts of firecrackers, while growth is gradual.
    • A substance's ability to return to its original form characterizes physical changes.
    • Changes like burning paper or deforestation are irreversible, leading to permanent alterations.
    • Inflating a balloon is an example of a reversible change, whereas the growth of a child exemplifies an irreversible change.

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    Description

    Test your knowledge of environmental science with this fill-in-the-blank quiz. Topics covered include biodegradability, sustainable practices, and the processes of photosynthesis and respiration. Challenge yourself to recall important information about our natural world!

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