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WorksheetsMagnetism and Its Principles
Total questions: 72
Worksheet time: 36mins
Assertion: Bar magnets can attract or repel each other. Reason: This happens due to the magnetic force between their poles.
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Assertion: Two magnets always attract each other. Reason: All poles of magnets are attractive.
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Assertion: Two bar magnets placed with like poles facing will stay still. Reason: Like poles attract each other.
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Assertion: A magnet loses its magnetism when heated strongly. Reason: Heating disturbs the alignment of magnetic domains.
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Assertion: The compass needle deflects when a bar magnet is brought near it. Reason: The compass needle is a magnet and responds to the magnetic field.
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Assertion: When a magnet is brought near a compass needle, it always attracts it. Reason: Compass needles are made of plastic.
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Assertion (A): Compass needle deflects even when glass is placed between it and a magnet. Reason (R): Glass is transparent and conducts magnetic force.
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Assertion (A): Magnetic force can work through various non-magnetic materials. Reason (R): Magnetic field does not require direct contact to influence magnetic objects.
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Assertion (A): Magnetic field lines can pass through glass. Reason (R): Glass contains no free electrons to respond to magnetic fields.
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Assertion (A): A magnet can attract a pin even if a sheet of plastic is placed between them. Reason (R): Magnetic fields can pass through non-magnetic materials.
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Assertion (A): A compass needle will not deflect if a magnet is completely wrapped in thick iron foil. Reason (R): Iron is a magnetic material and can block magnetic field lines.
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Assertion (A): Magnets can attract iron pins even through paper. Reason (R): Paper is a non-magnetic material and does not interfere with magnetic fields.
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Assertion (A): Magnetic fields can act through non-magnetic materials. Reason (R): Non-magnetic materials like plastic do not block or absorb magnetic field lines.
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Assertion (A): Iron blocks magnetic fields from passing through. Reason (R): Iron is a magnetic material that aligns with magnetic fields and redirects them.
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Assertion (A): Magnets should not be hammered. Reason (R): Hammering disturbs the arrangement of magnetic domains.
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Assertion (A): Like poles attract each other. Reason (R): This is why magnets are stored with like poles touching.
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Assertion (A): Magnets should never be stored near televisions or computers. Reason (R): Magnetic fields can distort or damage electronic components and memory.
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Assertion (A): Placing a magnet in boiling water strengthens it. Reason (R): Heat helps arrange magnetic domains in a straight line.
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Assertion (A): Students were advised not to disturb plants and animals during the nature walk. Reason (R): Every plant and animal plays a role in maintaining balance in nature.
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Assertion (A): Dr. Raghu said that each bird has a unique chirp. Reason (R): Birds use chirping only to entertain themselves.
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Assertion (A): Students were told to carry notebooks during the nature walk. Reason (R): Writing down observations helps in better learning and comparison later.
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Assertion (A): Observing a variety of birds, butterflies, and trees during the nature walk shows diversity in nature. Reason (R): Diversity means the presence of only animals in an area.
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Assertion (A): Maniram chacha advised the students to carefully listen to different sounds in nature. Reason (R): Sound is one of the ways by which living organisms communicate.
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Assertion (A): Students were advised to carry a water bottle. Reason (R): Drinking water during physical activity like walking prevents dehydration.
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Assertion (A): Plants like tulsi and neem have hard stems. Reason (R): Plants with hard stems are usually shrubs or trees.
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Assertion (A): Grass has a soft and thin stem. Reason (R): Herbs generally have soft stems and grow close to the ground.
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Assertion (A): Nature walks help students learn better. Reason (R): Learning by observing real things in nature enhances understanding.
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Assertion (A): Students started copying bird calls after hearing Maniram chacha. Reason (R): Mimicking sounds can be a fun way to develop attention to detail and listening skills.
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Assertion (A): Different plants have different shapes and arrangements of leaves. Reason (R): Leaf arrangement helps in the classification and identification of plants.
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Assertion (A): Students were encouraged to collect different fallen leaves and flowers. Reason (R): This helps create scrapbooks and improves observation of plant diversity.
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Assertion (A): Students should not pluck leaves or flowers from plants during the walk. Reason (R): Plucking can damage the plant and disturbs natural growth.
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Assertion (A): Dr. Raghu asked students to notice the different smells in the park. Reason (R): Each plant and flower has a unique scent, which is part of nature's diversity.
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Assertion (A): Students saw grasses, bushes, and large trees during the nature walk. Reason (R): These show that plants exist in many forms and sizes.
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Assertion (A): Dr. Raghu encouraged students to record observations. Reason (R): Observing without recording helps in accurate study of biodiversity.
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Assertion (A): Nature walks teach students that plants and animals are interconnected. Reason (R): Animals depend on plants for food and shelter, and plants often depend on animals for pollination and seed dispersal.
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Assertion (A): Maniram chacha is a scientist. Reason (R): He works in a laboratory with Dr. Raghu.
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Assertion (A): All plants have the same leaf structure. Reason (R): Leaves serve the same function in all plants.
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Assertion (A): Diversity in nature means observing only animals. Reason (R): Plants are not part of biodiversity.
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Assertion (A): Birds help in seed dispersal. Reason (R): Birds eat fruits and throw away the seeds far from the parent plant.
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Assertion (A): Tulsi is a shrub. Reason (R): Shrubs are tall plants with soft green stems.
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Assertion (A): Nature walks help students understand biodiversity better. Reason (R): Direct interaction with nature deepens understanding and observation skills.
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Assertion (A): Grouping animals is not useful. Reason (R): All animals are similar.
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Assertion (A): Monkeys are arboreal animals. Reason (R): They live on trees and swing from one to another.
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Assertion (A): All leaves on a plant look exactly the same. Reason (R): Leaves perform the same function, so their shape is always identical.
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Assertion (A): Grass has a soft and thin stem. Reason (R): A soft stem helps the plant bend without breaking.
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Assertion (A): Butterflies are attracted to colorful flowers. Reason (R): Colorful petals guide insects to the nectar.
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Assertion (A): Neem is a medicinal plant. Reason (R): All medicinal plants have pink flowers.
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Neem is a medicinal plant. All medicinal plants have pink flowers.
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Monkeys are mostly seen on trees during the day. Monkeys are arboreal and diurnal animals.
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Birds have different types of beaks. Beak shape is related to the type of food birds eat.
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Plants with fibrous roots are easy to pull from soil. Fibrous roots do not penetrate very deep.
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Nature walks help students understand biodiversity. Observation helps recognize patterns and differences in nature.
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Ants walk in a line while carrying food. Ants follow scent trails left by other ants.
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All animals in a park eat plants. Every living thing is a herbivore.
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Bees help in pollination. Bees move from flower to flower collecting nectar and pollen.
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Trees in the forest grow very tall. They compete for sunlight.
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All animals can live in every type of environment. Animals have specific adaptations to survive in their habitats.
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Students should not pluck leaves during nature walks. It helps protect the ecosystem and biodiversity.
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Snakes and worms are the same. Both are long and live in soil.
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Plants with large leaves grow well in shady areas. Large leaves help capture more sunlight.
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Bird sounds are useful in nature studies. Bird calls can indicate species and environmental changes.
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Only birds can fly. Flying is possible only with wings.
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All trees lose leaves in winter. Trees cannot grow in cold weather.
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Students use notebooks during nature walks. Recording observations helps remember and analyze biodiversity.
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Climbers need support to grow. Their stems are weak and cannot stand upright.
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Fungi are plants. Fungi grow in soil like plants.
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Diversity in organisms means only different shapes. All organisms are otherwise the same.
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Some trees have thorns. Thorns protect the plant from being eaten by animals.
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Maniram chacha helps identify bird calls. Local knowledge is valuable in understanding nature.
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Insects are not part of biodiversity. Biodiversity includes only big animals and plants.
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All plants with thick, brown, hard stems are trees. Trees have soft green stems.
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Herbs are usually short and have soft, green stems. Herbs need support to grow.
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