Class 5 practice
Class 5 science questions.
Science questions for Class 5, at the level of students aged 9–11, each with its answer and a short explanation. Try each one before opening the answer.
The Earth spins on its tilted axis while travelling around the Sun. What does this yearly revolution cause on Earth?
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Answer: The change of seasons
As the Earth revolves around the Sun on its tilted axis, different parts receive varying amounts of sunlight throughout the year. This cycle creates different seasons.
Rohan stands in the school playground at 12:00 noon on a sunny day. How does his shadow look compared to the morning?
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Answer: Much shorter
At noon, the Sun is nearly overhead. When light falls from directly above, shadows are at their shortest length.
Desert plants like the cactus store water in which part to survive dry conditions?
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Answer: Fleshy stem
Cacti have thick, fleshy stems that store water. Their leaves are modified into sharp spines to prevent water loss through transpiration.
Which planet in our solar system is known as the 'Red Planet' due to iron-rich soil?
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Answer: Mars
Mars appears reddish because its surface rocks and soil are rich in iron oxide, commonly called rust.
Frogs can breathe through lungs on land. How do they breathe when they are underwater?
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Answer: Through their moist skin
Adult frogs can absorb oxygen directly from the water through their thin, moist skin.
Which of these seeds has light, hair-like structures that help it travel on the wind?
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Answer: Dandelion
Dandelion seeds have parachute-like tufts of hair. These hairs catch the wind easily and carry the seeds far away from the parent plant.
Meera drops dry leaves and vegetable peels into a pit in her garden. What will these wastes turn into over time?
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Answer: Compost
Plant and food scraps are biodegradable. Microorganisms in the soil break them down into rich, natural fertilizer called compost.
Which organism in a grassland food chain acts as a primary producer?
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Answer: Grass
Green plants like grass are producers because they make their own food through photosynthesis, forming the base of the food chain.
In a forest food chain, which organism is always called a primary producer?
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Answer: Green plant
Green plants produce their own food using sunlight through photosynthesis, making them the base of food chains.
What phase of the Moon occurs when the Moon is directly between the Earth and the Sun?
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Answer: New Moon
During a New Moon, the Moon lies between Earth and the Sun. Its lit side faces away from Earth, making it completely invisible to us.
Green plants produce food using sunlight, water, and carbon dioxide. What are they called in a food chain?
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Answer: Producers
Green plants make their own food through photosynthesis. Because they create food energy for other living organisms in an ecosystem, they are called producers.
Cactus plants have spines instead of broad leaves. How does this adaptation help the plant in a desert?
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Answer: It prevents water loss.
Spines reduce the surface area exposed to dry desert air, reducing water loss through transpiration.
- True or false?
Frogs use only their lungs to breathe throughout their entire life cycle.
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Answer: False
Tadpoles breathe using gills in water. Adult frogs breathe through lungs on land and through their moist skin underwater.
- True or false?
Frogs can breathe through both their lungs and their moist skin.
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Answer: True
Frogs are amphibians. They breathe with lungs on land, but they can absorb dissolved oxygen through moist skin underwater.
- True or false?
Desert plants like cacti store water in their fleshy green stems instead of their leaves.
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Answer: True
Cactus leaves are reduced to spines to prevent water loss. The thick stem takes over photosynthesis and stores water.
- Fill in the blank.
Tiny openings on the surface of leaves through which gases are exchanged are called ___ (starts with S).
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Answer: stomata
Stomata are microscopic pores found mainly on leaves that allow carbon dioxide and oxygen to pass through.
- Fill in the blank.
Every bar magnet has exactly ___ magnetic poles.
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Answer: 2
Every magnet has two poles: a north pole and a south pole. Opposites attract, while like poles repel.
- Fill in the blank.
Earth completes one full spin on its own axis every ___ hours.
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Answer: 24
Earth takes about 24 hours to finish one full rotation on its axis, creating the daily cycle of day and night.
Which planet is the odd one out?
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Answer: Mars
Jupiter, Saturn, and Uranus are gas giant planets. Mars is a rocky, inner terrestrial planet.
Which of these living organisms is the odd one out?
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Answer: Mushroom
Neem, tulsi, and mango are green plants that make food through photosynthesis. Mushrooms are fungi that cannot photosynthesise.
These questions come from Ado’s question bank and are written with AI help. They are never used in ranked play, so practising them here can’t change anyone’s rank.
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