CBSE Class 5 EVS Energy How Things Work MCQs Set 01

Answer: (B) It is a leading example of solar energy production.

Explanation:
1. Bhadla Solar Park is a huge solar energy park located in Rajasthan.
2. It uses thousands of solar panels to change sunlight into clean electricity.
3. It is one of the biggest solar energy parks in the entire world.

Answer: (A) Sound energy

Explanation:
1. When you pluck a stretched rubber band, it shakes back and forth rapidly.
2. These fast shaking movements are called vibrations.
3. Vibrations travel through the air to our ears as sound energy.

Answer: (D) They rely on animal body heat.

Explanation:
1. Winters in the northern mountains are freezing cold.
2. Farm animals like cows and sheep naturally produce body warmth.
3. Keeping animals on the ground floor helps warm the living rooms above them.

Answer: (B) It is a renewable energy source.

Explanation:
1. Fast-flowing river water pushes large wheels called turbines.
2. This motion produces clean electricity without making smoke.
3. Rain keeps rivers flowing, so this energy never runs out.

Answer: (C) Oil

Explanation:
1. A fuel is something that burns to provide heat.
2. Oils can catch fire and burn steadily inside stoves or lamps.
3. Liquids like milk and water put out fire instead of burning.

Answer: (A) It makes things move, light up, produce sound, or change temperature.

Explanation:
1. Energy gives things the power to do work.
2. We see energy in action when a light bulb glows or a toy car rolls.
3. We also feel energy when a hot stove warms up a pan.

Answer: (A) Solar energy

Explanation:
1. Solar energy comes straight from the bright light of the Sun.
2. It creates electricity without producing harmful smoke or soot.
3. It keeps our air clean and helps protect our planet.

Answer: (B) Firewood and electricity

Explanation:
1. Cattle breathe out warm air and release natural body heat.
2. This natural heat rises into the upper rooms where families sleep.
3. This helps families stay warm without burning extra wood or using electric heaters.

Answer: (D) It powers essential appliances and machines.

Explanation:
1. Electricity travels quickly through wires into our homes.
2. It runs important machines like refrigerators, computers, fans, and lights.
3. Without electricity, schools, hospitals, and factories cannot work properly.

Answer: (C) Cooking gas

Explanation:
1. Cooking gas (LPG) comes in red metal cylinders or through pipes.
2. It turns on instantly with a clean, hot blue flame.
3. It cooks food quickly without leaving dark smoke inside the kitchen.

Answer: (C) Fan

Explanation:
1. A fan needs electrical energy to work.
2. When we turn on the switch, electricity flows through the wire into the motor.
3. The motor spins the blades fast to give us cool air.

Answer: (C) Fuel

Explanation:
1. Cars, motorcycles, and scooters have engines inside them.
2. Fuels like petrol, diesel, and CNG are put into the fuel tank.
3. The engine burns the fuel to produce energy that turns the wheels.

Answer: (B) Sun

Explanation:
1. The Sun provides natural light and warmth to the whole world.
2. Green plants use sunlight to prepare food through photosynthesis.
3. Animals and humans eat plants to get energy to live and grow.

Answer: (C) Coal

Explanation:
1. Coal is a dark rock burned inside big power plants.
2. Burning coal produces heavy smoke and bad gases that dirty the air.
3. Energy from wind, water, and sunlight is clean and does not make smoke.

Answer: (D) Machine

Explanation:
1. Food gives living beings energy, and fuels give cars energy.
2. The Sun is the biggest energy provider for the Earth.
3. A machine does not make energy; it needs energy from electricity or fuel to work.

Answer: (C) Both statements I and II are true.

Explanation:
1. Energy efficiency means saving power while getting all our work done.
2. LED bulbs give bright room light while using very little electric power.
3. Since both given sentences are correct facts, both statements are true.

Answer: (B) Windmills

Explanation:
1. Windmills have giant fan blades mounted high on tall towers.
2. Blowing wind pushes these large blades and makes them spin.
3. The spinning motion turns an internal machine to create electricity.

Answer: (B) Near a transformer

Explanation:
1. An electric transformer box carries very strong, high-voltage current.
2. Playing near it or touching its fence can cause dangerous electric shocks.
3. We should always play games safely in open parks and playgrounds.

Answer: (B) LED bulb

Explanation:
1. An LED bulb is a modern electric lighting bulb.
2. It uses very little electric power to give bright light.
3. It saves energy and reduces our electricity bills.

Answer: (C) Sound energy

Explanation:
1. Plucking a rubber band makes it vibrate back and forth quickly.
2. These quick shaking movements travel through the air.
3. Our ears hear these vibrations as sound energy.

Answer: (B) Rajasthan

Explanation:
1. Bhadla Solar Park is located in the desert of Rajasthan.
2. It has thousands of solar panels soaking up bright sunlight.
3. It is one of the largest solar power plants in the world.

Answer: (A) Something that makes things move and do work

Explanation:
1. Energy is the special power needed to do any work.
2. It makes toy cars roll, light bulbs glow, and water boil.
3. Without energy, nothing in the world can move or work.

Answer: (B) Gharaats

Explanation:
1. In northern mountain valleys, fast stream water rushes down slopes.
2. Villagers build traditional wooden watermills called Gharaats.
3. The flowing water spins a heavy grinding stone to crush grains into flour.

Answer: (C) Petrol and diesel

Explanation:
1. Cars, scooters, and buses have internal engines.
2. They need liquid fuels like petrol and diesel to run.
3. Burning these fuels inside the engine creates power to turn the wheels.

Answer: (B) In an electrical socket

Explanation:
1. Electrical wall sockets carry powerful, dangerous electric current.
2. Putting pens, pins, or fingers inside can give a deadly electric shock.
3. Only adults should carefully plug appliances into wall sockets.

Answer: (B) Energy

Explanation:
1. Rushing air has kinetic energy, which is the energy of moving things.
2. As air shoots out backward, it pushes the balloon forward.
3. This shows that moving air has the power to do work.

Answer: (C) Wind

Explanation:
1. Long ago, ships did not have diesel or petrol engines.
2. Sailors hung large cloth sails to catch blowing winds.
3. The strong push of wind energy carried ships across deep oceans.

Answer: (B) Yes, it uses energy even when we sleep

Explanation:
1. Our brain never completely stops working, even during sleep.
2. It controls our breathing, heartbeats, and dreams all night.
3. Therefore, the brain needs food energy all the time.

Answer: (B) Fan

Explanation:
1. A fan has an electric motor inside its body.
2. Electric current turns the motor, creating circular motion.
3. This spinning motion pushes air across the room to keep us cool.

Answer: (A) The Sun heats it up

Explanation:
1. The Sun sends down heat energy in its bright rays.
2. Water kept in open sunlight absorbs this warmth quickly.
3. Water in the shade stays cooler because sun rays cannot reach it directly.

Answer: (C) Stay away and tell an adult

Explanation:
1. Broken electric poles may have live, bare wires touching the ground.
2. Touching or walking close to them can cause severe electric shock.
3. You must keep a safe distance and alert an elder or police officer right away.

Answer: (B) The Sun

Explanation:
1. The Sun warms our planet and provides sunlight every day.
2. Green plants use sunlight to make food.
3. All animals and humans get energy by eating these plants.

Answer: (B) They create smoke and pollution

Explanation:
1. Burning solid wood or coal creates thick black smoke and soot.
2. Breathing this smoke irritates our eyes and harms our lungs.
3. It also makes the air around our homes dirty.

Answer: (B) Clean energy

Explanation:
1. The sun, wind, and water are natural and renewable resources.
2. Generating electricity from them produces zero smoke or ash.
3. That is why it is known as clean, eco-friendly energy.

Answer: (A) Oil acts as a fuel

Explanation:
1. A flame needs fuel to keep burning.
2. The oil feeds chemical energy to the cotton wick steadily.
3. The diya without oil goes out immediately because it has no fuel.

Answer: (C) Food

Explanation:
1. Humans and animals cannot run on petrol or coal.
2. Food gives our bodies the energy needed to walk, run, and grow.
3. Eating healthy meals keeps us active all day long.

Answer: (B) Cool in summer and warm in winter

Explanation:
1. Thick mud and stone walls block outside summer heat from entering.
2. In cold winter, they trap indoor warmth and keep it from escaping.
3. This keeps the home comfortable in all seasons without using electric heaters.

Answer: (C) Energy efficiency

Explanation:
1. Energy efficiency means avoiding power waste.
2. For example, an LED bulb gives the same bright light as an old bulb while using less electricity.
3. This saves natural resources and helps our environment.