Our Environment
Class 10 · Science
4 ideas in Class 10 Science, explained in plain words, with games and quizzes to practise.
Ecosystem Roles and Interdependence
Part of: Ecosystems and Energy Flow
An ecosystem includes living things and physical surroundings such as water, soil, wind and temperature. Producers make food, consumers obtain it by eating, and decomposers break down dead material and waste.
Why it matters. Each group depends on others, while physical conditions influence how organisms grow and survive.
Try it in two minutes
- Name living things in a garden or pond.
- List physical parts such as soil and water.
- Sort organisms into food-makers, eaters and decomposers.
Try at home. Sketch a small garden ecosystem and connect three living things to a non-living part.
Food Chains, Energy Flow and Magnification
Part of: Ecosystems and Energy Flow
A food chain shows who eats whom. Producers form its first trophic level, followed by consumers. Energy decreases at each step, while some persistent chemicals can accumulate and become more concentrated higher in a chain.
Why it matters. These patterns explain why chains are short and why contaminants can affect top consumers strongly.
Try it in two minutes
- Write a simple plant-to-herbivore-to-carnivore chain.
- Mark producers and consumers.
- Discuss why less usable energy reaches each next level.
Try at home. Draw a food web with one organism connected to two possible food sources.
Ozone Layer and UV Protection
Part of: Human Impacts
Ozone high in the atmosphere absorbs harmful ultraviolet radiation from the Sun. Certain synthetic chemicals, including CFCs, have been linked to ozone depletion.
Why it matters. A thinner ozone shield allows more damaging UV radiation to reach organisms.
Try it in two minutes
- Ask what kind of radiation ozone helps block.
- Trace how extra UV exposure could affect living things.
- Discuss why limiting ozone-depleting chemicals matters.
Try at home. Look for information on product labels about ozone-friendly refrigerants with an adult.
Biodegradable Waste and Disposal
Part of: Human Impacts
Biodegradable materials can be broken down by organisms such as bacteria and fungi. Many plastics persist for a long time under ordinary environmental conditions and may harm ecosystems.
Why it matters. Sorting waste by how it breaks down helps people choose suitable disposal and reduce long-lasting pollution.
Try it in two minutes
- Sort clean example cards into biodegradable and non-biodegradable.
- Ask what organisms could break down each item.
- Discuss how persistent waste could affect soil or water.
Try at home. With an adult, separate kitchen scraps from clean recyclable packaging.
What your child will practise
- Biodegradable Waste and Disposal: Ocean Quick Fire (Quick Fire)
- Ecosystem Roles and Interdependence: Explorer'S Map Sort (Sort It Out)
- Ecosystem Roles and Interdependence: Jungle Quick Fire (Quick Fire)
- Food Chains, Energy Flow and Magnification: Lab Explorer Quest (Collect the Answer)
- Ozone Layer and UV Protection: Jungle Puzzle (Clue Puzzle)
- Quiz: Biodegradable Waste and Disposal (8 questions)
- Quiz: Ecosystem Roles and Interdependence (8 questions)
- Quiz: Food Chains, Energy Flow and Magnification (8 questions)
- Quiz: Ozone Layer and UV Protection (8 questions)