Code: Class5-EVS-08082026
Class: Class 5
Subject: EVS
Hard

Natural Resources

Question #2320
Imagine a village that relies entirely on firewood for cooking and heating. If they keep cutting down trees without planting new ones, what type of resource is the firewood considered to be, and what is the likely outcome?
a.
b.
c.
d.
Question #2321
Which of the following scenarios best describes the consequence of burning excessive fossil fuels like coal and petroleum for energy, considering their resource type?
a.
b.
c.
d.
Question #2322
A scientist is studying a sample of atmospheric air collected from a mountain peak. If the scientist wants to find the gas that makes up the largest percentage of this air sample, which gas should they focus on?
a.
b.
c.
d.
Question #2323
You observe clouds forming and rain falling during a storm. In which layer of the atmosphere are these weather phenomena primarily occurring?
a.
b.
c.
d.
Question #2324
If you were to design an airplane that needs to fly very smoothly to avoid turbulence and protect passengers from harmful ultraviolet rays, in which specific atmospheric layer would you primarily aim for it to operate?
a.
b.
c.
d.
Question #2325
During a cold winter morning, you notice a thick, hazy layer over the city that makes it difficult to see and breathe. This condition is often worsened by vehicle exhaust and industrial emissions mixing with fog. What is this phenomenon called?
a.
b.
c.
d.
Question #2326
Which of the following statements correctly describes a crucial property of air that demonstrates it occupies space?
a.
b.
c.
d.
Question #2327
You are observing a tall chimney releasing smoke. The smoke initially goes up but then spreads out horizontally as it rises higher. This spreading out indicates that air has which property?
a.
b.
c.
d.
Question #2328
A student leaves a glass of cold water outside on a humid day. After some time, tiny water droplets appear on the outer surface of the glass. What concept does this observation best illustrate?
a.
b.
c.
d.
Question #2329
Which of the following activities would primarily lead to a significant decrease in the overall humidity in a local environment?
a.
b.
c.
d.
Question #2330
The ozone layer, found in the stratosphere, is vital for life on Earth because:
a.
b.
c.
d.
Question #2331
Why is water considered a "universal solvent"?
a.
b.
c.
d.
Question #2332
You have a mixture of sand and sugar in a glass of water. Which of the following statements correctly describes how these two impurities will behave in the water?
a.
b.
c.
d.
Question #2333
A student wants to separate pure water from a solution of salt and water. They boil the solution and collect the steam that rises, then cool the steam back into liquid water. What is this separation method called?
a.
b.
c.
d.
Question #2334
Which of the following methods would be most effective for quickly separating very fine, suspended clay particles from muddy water to obtain clear water, without necessarily boiling the water?
a.
b.
c.
d.
Question #2335
Imagine a water treatment plant. After the initial sedimentation tanks where heavy impurities settle, what would be the next logical step to remove even finer suspended particles from the water?
a.
b.
c.
d.
Question #2336
Why is chlorination an important step in a water treatment plant, especially for drinking water?
a.
b.
c.
d.
Question #2337
Which of the following resources, if overused by humans, would take the longest time to regenerate or replenish, essentially becoming unavailable for many generations?
a.
b.
c.
d.
Question #2338
You are trying to identify a gas that is essential for photosynthesis in plants and also contributes to the greenhouse effect. Which gas fits this description?
a.
b.
c.
d.
Question #2339
If the amount of water vapor in the air (humidity) significantly increases, what would be the most likely effect on a wet cloth hanging outside to dry?
a.
b.
c.
d.
Question #2340
Which of the following descriptions accurately distinguishes the exosphere from the other atmospheric layers?
a.
b.
c.
d.
Question #2341
A group of students is conducting an experiment to demonstrate that air has weight. Which of the following setups would best illustrate this property?
a.
b.
c.
d.
Question #2342
Which of the following processes would be LEAST effective in separating a mixture of common salt and iron filings?
a.
b.
c.
d.
Question #2343
You observe a cloud of mist over a lake on a cool morning. This mist is formed because the air above the lake has become saturated with water vapor and cooled. This phenomenon is closely related to which atmospheric concept?
a.
b.
c.
d.
Question #2344
A factory discharges waste water containing both fine sand particles and dissolved chemical salts. If the goal is to first remove the visible solid particles, and then later deal with the dissolved chemicals, what two separation methods should be applied in that order?
a.
b.
c.
d.
Question #2345
The lowest layer of the atmosphere where airplanes fly and most of the air we breathe exists is called the troposphere. What would be a likely characteristic of the air density in this layer compared to higher layers like the stratosphere?
a.
b.
c.
d.
Question #2346
Consider a scenario where the Sun's rays are very intense. Which component of the atmosphere helps protect living beings on Earth from these harmful rays?
a.
b.
c.
d.
Question #2347
A scientist is studying the composition of air. If they want to find out which gas is released by plants during photosynthesis and is essential for animals to breathe, which gas would they be looking for?
a.
b.
c.
d.
Question #2348
When you boil water with dissolved salt in a kettle, and steam comes out of the spout, what happens to the salt?
a.
b.
c.
d.
Question #2349
You are helping to set up a small-scale water purification system for a remote village. After collecting river water, the first step is to let it sit in a large tank overnight to allow heavier particles to settle. What is this initial process called?
a.
b.
c.
d.
Score: 0/30
Accuracy: 0%
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