Nature's Treasures
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Preview questions (no answers)
- 1.
Which gas is used for the respiration of organisms living in soil?
A.Oxygen trapped between soil particles
B.Nitrogen in the soil
C.Water in the soil
D.Carbon dioxide in the soil
- 2.
Which of these is NOT a use of air?
A.Helps in sailing yachts
B.Helps in flying gliders
C.Used by plants to make food
D.Used to make plastic
- 3.
The process by which plants lose water in the form of vapor into the air is called ______.
A.Photosynthesis
B.Respiration
C.Transpiration
D.Condensation
- 4.
What is the role of the fine hair and mucus inside our nose?
A.To help in smelling
B.To prevent dust particles from entering the lungs
C.To keep the nose cool
D.To produce sound
- 5.
In the process of winnowing, a farmer allows a mixture of grain and husk to fall from a height in an open field. Which statement correctly explains the role of moving air (wind) in this process?
A.The oxygen in the air reacts chemically with the husk to make it lighter than the grain.
B.Moving air carries away the lighter husk particles to a distance, while the heavier grains fall straight down.
C.The air pressure increases as the grain falls, which helps in pushing the seeds vertically downward.
D.The water vapor present in the air helps the heavier grains to stick together and settle faster.
- 6.
The balance of oxygen and carbon dioxide in the atmosphere is maintained through:
A.Respiration in animals and burning of fuels
B.Photosynthesis in plants and respiration in living organisms
C.Evaporation and condensation of water
D.Nitrogen fixation by bacteria
- 7.
Which of these is the main reason why factories have long chimneys?
A.To produce more smoke
B.To take harmful smoke and gases high up in the air
C.To cool down the factory machines
D.To attract birds
- 8.
If you were to compare the mass of a completely deflated football with a fully inflated football, what would you find?
A.They have the same mass
B.The deflated football is heavier
C.The inflated football is heavier because air has mass
D.The inflated football is lighter because air makes it float
- 9.
Which gas is used by the 'Nature's Treasures' in the soil to help in the decomposition of organic matter?
A.Nitrogen
B.Oxygen
C.Carbon dioxide
D.Hydrogen
- 10.
Which of these is a direct consequence of the presence of 'dust' in the air?
A.Formation of clouds
B.Formation of fog and smog in winters
C.The blue color of the sky
D.Both B and C
Download the worksheet for Nature's Treasures - Air to practice offline. It includes additional chapter-level practice questions.
Preview questions (no answers)
- 1.
Which of the following is a simple way to purify water at home?
A.Boiling
B.Freezing
C.Adding salt
D.Coloring it
- 2.
The main cause of evaporation of water from oceans is:
A.Wind
B.Heat from the Sun
C.Fish movement
D.Ships
- 3.
In which form is water present in the air all the time?
A.Ice
B.Dew
C.Water vapor
D.Snow
- 4.
Water is known as a 'universal solvent' because:
A.It is found everywhere
B.It can dissolve many substances
C.It is needed by all life
D.It is colorless
- 5.
Study the provided flowchart which classifies different sources of water. Which of the following correctly identifies a surface water source to fill blank 'A' and a groundwater source to fill blank 'B'?
A.A: Hand-pump; B: Lake
B.A: Pond; B: Sea
C.A: River; B: Open Well
D.A: Tube-well; B: Stream
- 6.
The shortage of water is a global problem. Which of the following is a way to reduce water waste at home?
A.Leaving the shower on while soaping
B.Using a bucket to bathe instead of a shower
C.Throwing away leftover drinking water
D.Washing one or two clothes in a large washing machine
- 7.
Catch water where it falls' is the basic motto of:
A.Building dams
B.Rainwater harvesting
C.Canal construction
D.Desalination
- 8.
Which of the following is an effect of excessive rainfall in a region?
A.Increase in soil fertility due to washing away of salt
B.Soil erosion, where the top fertile layer of soil is washed away
C.Permanent rise in the level of the sea
D.Decrease in the number of waterborne diseases
- 9.
Why is it said that 'Water is a renewable resource, but fresh water is a scarce resource'?
A.Because the total amount of water is increasing, but fresh water is decreasing
B.Because the water cycle constantly recycles water, but the amount of usable fresh water is very limited and can be depleted locally
C.Because saltwater can be turned into freshwater easily at home
D.Because we can create water in factories whenever we need it
- 10.
What happens to the water vapor in the air as it rises higher into the atmosphere?
A.It becomes hotter and expands
B.It cools down and condenses into tiny water droplets
C.It disappears into space
D.It turns into oxygen
Download the worksheet for Nature's Treasures - Water to practice offline. It includes additional chapter-level practice questions.
Energy from the Sun
SubtopicEnergy from the Sun under Nature's Treasures for Grade 6 CBSE.
Preview questions (no answers)
- 1.
Conservation of solar energy means using it ________.
A.Carelessly
B.Wisely
C.Only once
D.Never
- 2.
In the daytime, the Sun provides us with ________ so we don't need bulbs.
A.Natural light
B.Artificial light
C.Battery power
D.Sound
- 3.
Solar power is measured in units like:
A.Liters
B.Kilograms
C.Watts
D.Meters
- 4.
Which of these is a biotic component that depends on solar energy?
A.Rocks
B.Water
C.Animals
D.Air
- 5.
In agriculture, solar energy is used for the preservation of crops through a process called 'solar drying'. Based on the flowchart provided, what is the primary role of solar energy during 'Step X'?
A.To provide the light required for the harvested crops to continue photosynthesis
B.To convert into electrical energy that powers mechanical cooling fans
C.To convert into heat energy that evaporates moisture to prevent the crops from rotting
D.To cause a chemical reaction that turns water into essential minerals for the crop
- 6.
What is the ultimate source of energy that drives the weather patterns on Earth?
A.The Moon
B.The Sun
C.The Earth's core
D.The Oceans
- 7.
How do animals obtain the Sun's energy?
A.By basking in the sun all day
B.By eating plants or other animals that have eaten plants
C.By breathing in sunlight
D.By drinking water that has been in the sun
- 8.
Which of the following is an example of an 'indirect' use of solar energy?
A.Drying clothes in the sun
B.Using a solar-powered calculator
C.Using electricity from a wind turbine
D.Cooking in a solar cooker
- 9.
What happens to the temperature of the Earth during the night when the Sun's energy is not being received?
A.It continues to rise due to friction
B.It drops as the Earth radiates heat back into space
C.It stays exactly the same
D.It drops because the Moon is made of ice
- 10.
Solar cells are often made of silicon. Which property of silicon is most useful here?
A.It is a perfect insulator
B.It is a semiconductor that can create an electric current when hit by light
C.It is the strongest metal on Earth
D.It is a liquid that can flow easily
Download the worksheet for Nature's Treasures - Energy from the Sun to practice offline. It includes additional chapter-level practice questions.
Preview questions (no answers)
- 1.
Why do forest floors have a lot of dead leaves and twigs?
A.People throw them there
B.They fall from the trees and decompose
C.The wind brings them from the city
D.Animals collect them for fun
- 2.
A forest is a habitat for:
A.Only plants
B.Only animals
C.Both plants and animals
D.Only humans
- 3.
Large scale cutting of trees is called:
A.Gardening
B.Agriculture
C.Deforestation
D.Pollination
- 4.
Which part of the tree provides anchorage and absorbs water?
A.Leaves
B.Stem
C.Roots
D.Flowers
- 5.
In a dense forest, the 'Canopy' layer acts like a natural umbrella. Based on the provided diagram, how does this structure primarily protect the forest floor during a heavy downpour?
A.It prevents the rain from reaching the forest floor at all.
B.It breaks the force of the raindrops, allowing water to drip down slowly.
C.It heats the water so it evaporates before hitting the ground.
D.It directs all the water into the trunks of the trees only.
- 6.
Which of the following statements about forests is INCORRECT?
A.Forests protect the soil from being washed away by rain
B.Forests influence the climate and air quality
C.Forests are not necessary if we have enough technology to produce oxygen
D.Forests provide a home for a variety of wildlife
- 7.
What role do herbivores play in the forest food chain?
A.They eat other animals
B.They produce food from sunlight
C.They eat plants and transfer energy to carnivores
D.They decompose dead organic matter
- 8.
Which of the following human activities is the most sustainable way to use forest resources?
A.Clear-cutting entire forests for agriculture
B.Selective logging and planting new trees for every tree cut
C.Removing all the leaf litter for use as fuel
D.Hunting all the predators to protect the herbivores
- 9.
What is the primary reason for the high humidity levels often found in tropical rainforests?
A.Frequent volcanic activity in those regions
B.High rates of transpiration from the dense vegetation
C.Large number of animals breathing out water vapor
D.The soil being made entirely of water
- 10.
In a forest, why is the 'Canopy' described as a roof?
A.Because it is made of wooden planks
B.Because the branches of tall trees overlap to cover the area below
C.Because it is where all the birds build their houses
D.Because it prevents any rain from reaching the ground
Download the worksheet for Nature's Treasures - Forests to practice offline. It includes additional chapter-level practice questions.
Soil, Rocks and Minerals
SubtopicSoil, Rocks and Minerals under Nature's Treasures for Grade 6 CBSE.
Preview questions (no answers)
- 1.
Which rock is used to make blackboard slates?
A.Slate
B.Granite
C.Pumice
D.Marble
- 2.
Which mineral is used to make electrical wires?
A.Copper
B.Coal
C.Sulfur
D.Talc
- 3.
Which of these is a way to conserve soil?
A.Deforestation
B.Step farming
C.Overgrazing
D.Making slopes
- 4.
Which type of rock is formed from the shells and skeletons of sea creatures?
A.Granite
B.Pumice
C.Limestone
D.Quartzite
- 5.
Which mineral is very soft and is the main ingredient in talcum powder?
A.Quartz
B.Feldspar
C.Talc
D.Diamond
- 6.
What is the term for the process of planting trees in a large area to prevent soil erosion?
A.Deforestation
B.Afforestation
C.Overgrazing
D.Weathering
- 7.
Which of the following rocks is used to make cement and glass?
A.Gneiss
B.Limestone
C.Pumice
D.Slate
- 8.
A student tests a rock sample and finds it reacts with dilute hydrochloric acid to produce bubbles of carbon dioxide. The rock is most likely:
A.Sandstone
B.Limestone
C.Granite
D.Basalt
- 9.
The process of 'Strip Cropping' helps in soil conservation by:
A.Planting only one type of crop in the whole field
B.Leaving the land fallow for several years
C.Growing different crops in narrow strips to break the force of wind and water
D.Using chemical fertilizers instead of organic manure
- 10.
Which of the following is a non-metallic mineral used in the electrical industry because of its insulating properties?
A.Copper
B.Aluminum
C.Mica
D.Silver
Download the worksheet for Nature's Treasures - Soil, Rocks and Minerals to practice offline. It includes additional chapter-level practice questions.
Preview questions (no answers)
- 1.
Using fossil fuels wisely is important because they are ________.
A.Renewable
B.Non-renewable
C.Abundant
D.Free
- 2.
Which of the following is a renewable source of energy?
A.Coal
B.Petroleum
C.Wind
D.Natural gas
- 3.
Coal is mainly composed of which element?
A.Carbon
B.Iron
C.Gold
D.Silver
- 4.
What is the primary reason for the formation of acid rain?
A.Oxygen in the air
B.Burning of fossil fuels
C.Solar energy
D.Planting trees
- 5.
Which of the following is an example of an exhaustible natural resource that is NOT a fossil fuel?
A.Coal
B.Minerals
C.Sunlight
D.Air
- 6.
In the Earth's crust, where is natural gas usually found in relation to petroleum oil?
A.Below the oil
B.Mixed with the oil
C.Above the oil
D.In a different continent
- 7.
The time period during which fossil fuels were formed is often called the:
A.Jurassic Age
B.Carboniferous Age
C.Industrial Age
D.Stone Age
- 8.
Which of the following is a direct consequence of the rapid depletion of fossil fuels?
A.Increase in forest cover
B.Decrease in global temperatures
C.Energy crisis for future generations
D.Increase in the Earth's oxygen levels
- 9.
The formation of coal is a process that takes how long?
A.Hundreds of years
B.Thousands of years
C.Millions of years
D.Billions of years
- 10.
The use of CNG in Delhi's public transport has significantly reduced pollution. Why is it cleaner than diesel?
A.It is a liquid fuel
B.It leaves no residue and emits fewer harmful gases
C.It is cheaper to produce
D.It is found in deep oceans
Download the worksheet for Nature's Treasures - Fossil Fuels to practice offline. It includes additional chapter-level practice questions.
Natural Resources: Renewable and Non-renewable
SubtopicNatural Resources: Renewable and Non-renewable under Nature's Treasures for Grade 6 CBSE.
Preview questions (no answers)
- 1.
Human beings are considered a resource because of their ________.
A.Physical size
B.Weight
C.Skills and knowledge
D.Ability to consume resources
- 2.
Which of these is a renewable resource found in the atmosphere?
A.Iron
B.Wind
C.Coal
D.Copper
- 3.
Which of the following fuels is formed from the remains of sea organisms?
A.Coal
B.Firewood
C.Petroleum
D.Biogas
- 4.
Why is soil considered a natural resource?
A.It is used to make glass
B.It supports plant growth and agriculture
C.It is used as a fuel
D.It is found in the atmosphere
- 5.
Which natural resource is primarily used as a raw material in the construction of buildings and roads?
A.Coal
B.Natural gas
C.Rocks and minerals
D.Petroleum
- 6.
Why is wind energy considered a 'clean' energy source?
A.It requires a lot of soap to work.
B.It does not produce any smoke or harmful emissions during operation.
C.It only works in clean, unpolluted cities.
D.It cleans the air as it blows through the turbines.
- 7.
Which of the following is a major threat to the availability of minerals?
A.Recycling of metals
B.Discovery of new synthetic alternatives
C.Rapid industrialization and over-mining
D.Decreasing human population
- 8.
The term 'Resource' refers to anything in our environment that:
A.Is only used by humans for fun
B.Can be used to satisfy our needs, provided it is technologically accessible and economically feasible
C.Is non-living and made of metal
D.Is only found under the sea
- 9.
What is the main advantage of using a 'Solar Cooker' over a 'Wood Stove'?
A.It cooks food much faster
B.It can be used at midnight
C.It uses a renewable, free source of energy and causes no pollution
D.It makes the food taste like coal
- 10.
Petroleum was formed from the remains of:
A.Giant ferns and trees on land
B.Tiny organisms that lived in the sea millions of years ago
C.Rocks that melted under pressure
D.Volcanic ash mixed with water
Download the worksheet for Nature's Treasures - Natural Resources: Renewable and Non-renewable to practice offline. It includes additional chapter-level practice questions.
Resources We Use
SubtopicResources We Use under Nature's Treasures for Grade 6 CBSE.
Preview questions (no answers)
- 1.
Why should we use public transport like buses or trains?
A.To waste time
B.To save fuel and reduce pollution
C.To make the roads crowded
D.To spend more money
- 2.
Petroleum is also called ________ oil.
A.Crude
B.Cooking
C.Edible
D.Olive
- 3.
Which of these activities helps in conserving electricity?
A.Leaving lights on during the day
B.Using energy-efficient bulbs like LEDs
C.Using an air conditioner even when it is cold
D.Keeping the TV on standby all night
- 4.
What is the percentage of nitrogen in the Earth's atmosphere?
A.21%
B.0.03%
C.78%
D.1%
- 5.
Which of the following is NOT a way to conserve water at home?
A.Using a bucket instead of a hose to wash a car
B.Fixing leaking taps immediately
C.Leaving the tap running while washing clothes
D.Reusing water used for washing vegetables to water plants
- 6.
In which layer of the soil profile do we typically find the parent rock breaking down into smaller pieces?
A.Topsoil
B.A-horizon
C.C-horizon
D.B-horizon
- 7.
The practice of using resources carefully so that they are available for future generations is called:
A.Over-exploitation
B.Sustainable development
C.Industrialization
D.Mining
- 8.
What is 'Over-exploitation' of resources?
A.Using resources very carefully
B.Using resources at a rate faster than they can be replenished by nature
C.Using only renewable resources
D.Finding new resources using technology
- 9.
Which of the following is a direct threat to 'Wildlife' as a natural resource?
A.Afforestation
B.Habitat destruction and poaching
C.Building birdhouses
D.Using organic pesticides
- 10.
In the extraction of minerals, what does the term 'Open-cast mining' refer to?
A.Digging very deep tunnels underground
B.Removing the surface layers of the earth to reach minerals at shallow depths
C.Using nets to catch minerals in the sea
D.Extracting minerals using high-pressure air
Download the worksheet for Nature's Treasures - Resources We Use to practice offline. It includes additional chapter-level practice questions.