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2nd End of Unit Assessment Science V (1)

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Science Class V
Beaconhouse School System- Central Region
Branch
2nd End of Unit Assessment-Unit2
NAME: ____________________________
DATE: ________________
SECTION: ___________________
TIME: 40min. MARKS: 25
1. Fill in the blanks:
/5
a. The increase in _____________ is the space occupied by the air.
b. ____________ occupy less space when compressed.
c. During ___________________, plants use carbon dioxide to make food.
d. _______________ is the most abundant gas in the air.
e. ______________ has the least air spaces and absorbs the least water.
2. Write true or false for the given statements and write correct statement for
the false one.
/5
a. Carbon monoxide and sulphur dioxide are useful to our health and the
environment
___________________________________________________________
___________________________________________________________
Topic: Gases all Around
1
2012-2013
Science Class V
Beaconhouse School System- Central Region
Branch
b. Nitrogen gas is used by plants to make food during photosynthesis
___________________________________________________________
___________________________________________________________
c. Deflated balloon has greater mass than a balloon filled with air
___________________________________________________________
___________________________________________________________
d. Many gases around us are colourless and smells beautiful
___________________________________________________________
___________________________________________________________
e. Neon gas is produced when plants and fuels burn
___________________________________________________________
___________________________________________________________
Q3 Give scientific reasons for the following
/5
a. Woolen clothes keep us warm during winter.
________________________________________________________________
________________________________________________________________
b. Birds make use of the fact that air is a god insulator.
________________________________________________________________
________________________________________________________________
c. Many tiny bubbles can be seen in fizzy drinks
________________________________________________________________
________________________________________________________________
d. Mini beasts get oxygen and stay alive even though they live under ground.
________________________________________________________________
________________________________________________________________
Topic: Gases all Around
2
2012-2013
Science Class V
Beaconhouse School System- Central Region
Branch
e A doubleglazed windows prevent the heat loss in winter and in summer, it prevents
the heat outside from passing through the window
As air is a poor conductr of heat, the gap ensures that the heat lss or gain is greatly
reduced
(any appropriate answer for this section is acceptable)
Q4 Which plunger of the two syringes will be easier to push? Give reason for
your answer
/11/2
( ½ mark for the answer and 1 mark for reasoning)
plunger
water
air
The plunger with air in it will be easier to push As it is very difficult to squash or
compress a solid or a liquid Gases occupy less space when compressed They can also
flow and spread out to occupy a larger space So it is much easier to compress a gas
5 Complete the following table.
/2
Gas
Uses
Oxygen
used in scuba diving
Neon
used to produce lasers
Argon
used to fill light bulbs
Nitrogen
used to fill in food packaging
Topic: Gases all Around
3
2012-2013
Science Class V
Beaconhouse School System- Central Region
Branch
6 Ahmad wanted to know which of the candles will burn for longer The ‘A’ kept
in an open air or the ‘B’ covered with a glass jar He set up the apparatus as
follows and kept them on the laboratory table for 5 minutes.
A
a. Which candle will extinguish? Give a reason for your answer.
/1½
Oxygen supports burning Without oxygen things will not burn When the candle is
covered with a glass jar it will stop burning So the candle flame will be
extinguished
b. What are the factors that Ahmad should have kept the same?
/1
i. The size of the candle
ii. The time given for burning
c. Which factor should be kept different?
/05
The place, one was kept under the glass jar and the other was kept in an open air
7 Rani collected three different types of soil. She wanted to find out which type
of soil contained the most air. She placed the same amount of each type of soil
in three separate jars. She poured a cupful of water into each jar. The results
are shown below.
Topic: Gases all Around
4
2012-2013
Science Class V
Beaconhouse School System- Central Region
Branch
What do you think was observed when Rani added water to the soil? Give a
reason for your observation.
/05m
When the water was added to soil, some of the water was absorbed by the soil to fill
up the air spaces in the sil Soil that has a lot of air spaces absorbs more water than
the soil that has less air spaces
Arrange the three types of soil in order, from the soil with the least air to the
soil with the most air in the boxes below. Name each soil as well
/3m
Soil B, clayey soil, Soil A, garden soil Soil C Sand
1.
Topic: Gases all Around
5
2012-2013
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