Altitude, Air and High Passes Worksheet for Grade 5 — EVS

Grade 5 · EVS

Altitude, Air and High Passes

3 activities · Sort it! · Fill in!

Altitude effects on breathing, Ladakhi shelter and yak lifestyle, air properties

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Each situation below happened to a child during a mountain trip. Sort each one — did it happen because of HIGH ALTITUDE (mountains) or is it something normal at LOW ALTITUDE (plains)?

Sort it!

1Meena boiled water for tea in her kitchen at home and it boiled at exactly 100°C

2Arjun opened his sealed bag of chips at a mountain camp and the packet had puffed up like a balloon

3The doctor said Priya's blood count was normal and she needed no special treatment before her trek

4At 4000 m, Leena noticed her water bottle was ready for tea before she expected — it had started boiling sooner than usual

5The mountaineer's guide said they must stop for two days at the base camp before going higher — their bodies needed time to adjust

6After climbing steeply for an hour, Riya felt a headache and wanted to vomit even though she had eaten well

7Rohan ran a race at school and recovered his breath within a minute

8After three weeks at a high camp, the doctor measured more red blood cells in the climber's blood than before the expedition

At high altitude (mountains)

write sentence numbers here

At low altitude (plains)

write sentence numbers here

Read each situation and fill in the missing word!

Fill in!

The doctor advised the trekking group to spend three days at 3500 m before going to 5000 m. This gradual adjustment is called .

red blood cells

acclimatisation

altitude

After one day at 3500 m, Priya felt fine, but her friend who rushed straight to 5000 m felt dizzy and nauseous — her friend was suffering from altitude .

mountaineers

altitude

sickness

Even with acclimatisation, some peaks are so high that carry cylinders of extra air to breathe near the top.

red blood cells

mountaineers

pressure

Leena's body ached after climbing rapidly. The doctor said her cells were not getting enough — the main gas needed by the body.

oxygen

mountaineers

pressure

At sea level, each breath you take contains plenty of air molecules. At great heights, air becomes — fewer molecules enter your lungs per breath.

acclimatisation

sickness

thin

A child did different 'blowing' experiments. Sort each result — is it what happens with WARM exhaled air (mouth open wide) or with COOL directed air (lips pursed tight)?

Sort it!

1The candle flame flickered and nearly went out when she blew hard through a small opening in her lips

2The hot idli cooled down faster when she blew on it with pursed lips

3Her spectacle lens fogged up when she breathed on it gently with open mouth

4The pain from the bee sting felt less sharp for a moment when she blew sharply on it through tight lips

5Steam appeared in front of her face on a cold morning when she sighed with her mouth open

6Her cold hands felt warmer after she cupped them and breathed on them with an open mouth

Warm air (mouth open wide)

write sentence numbers here

Cool air (lips pursed tight)

write sentence numbers here

Colour a star for each activity you finish!

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