3. WS 2012 2013 Class4 May June Our Environment. Editeddoc

7/29/2019 3. WS 2012 2013 Class4 May June Our Environment. Editeddoc

1/4Global Indian International School

We nurture global citizens

GIIS/GIISAC Template Kit-12 Templates/ 3.Worksheet

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Topic Our Environment Work Sheet No. SC/03/2012-13Grade 4 Subject ScienceName Date

Section - AQ1. A group of students participated in a 'Beach Cleanup' activity. They drew up alist of the discarded items they found on the shoreline, as shown below. Thestudents had a discussion about the items found.

How should we classify these waste materials?

BIO-DEGRADABLE WASTES NON BIO-DEGRADABLE WASTES

Campus: Balestier

Session: 2012-2013

Soiled disposable diaper styrofoam box tissue paper torn towelplastic spectacle frame

Wooden plank orange peel nylon rope glass bottle

aluminium canChicken bone plastic bag



Section B

Q.2. Choose the correct option:

a. If waste materials contaminate the source of drinking water which of the following

diseases will spread?i. Scurvyii. Typhoidiii. Malariaiv. Anaemia

b. CNG stands for ___________.

i. Compressed Natural Gasoline ii. Compressed Natural Gas

iii. Compressed Nitrogen Gas iv. Compressed Neon Gas

c. What is the main man made greenhouse gas?

i. Oxygen ii. Hydrogen iii. Nitrogen

iv. Carbon-di-oxide

d. What is groundwater?

i. Water that is spilled onto the ground ii. Water beneath the ground surface

iii. The bottom part of a lake or river iv. Rainwater that lands on the ground

e. One of the best solutions to get rid of non-biodegradable wastes is______________.

i. burning ii. dumping

iii. burying iv. recycling



Q.3. Match each kind of energy with the correct sentence:

1. Wave power a. is generated from runningwater. Dams are built across alake or river in a valley to trapwater. The water flows throughtunnels and turns the turbineswhich make electricity.

2. Geothermal power b. are used to convert the Sunsenergy into electricity.

3. Fossil fuels c. comes from the movement ofwater in the sea by the tides.These tides happen twice aday.

4. Hydroelectricity d. uses the energy of the wavesto turn turbines that makeelectricity.

5. Nuclear energy e. uses the energy from plantsand waste materials to makeelectricity.

6. Wind energy f. is made from radioactiveuranium ore which occurs

naturally in the ground.

7. Tidal energy g. uses the heat that comes fromdeep rocks under the surface ofthe Earth.

8. Biomass h. were formed in theCarboniferous period millions ofyears ago (before thedinosaurs!)

9. Solar panels i. is used to turn wind turbinesand make electricity.

. 2. 3. 4. 5. 6. 7. 8. 9.



Section - C

Q.4. Fill in the right letters in the horizontal boxes.

a. Strong rain and windsstarting over the sea,

rotating in big whirlingcircles.

b. Violent shaking of the Earthscrust due to the movementsdeep underground and whichcan cause a lot of damage.

c. Uncontrolled fire which destroys forest,jungle and vegetation as well asanimal species. Such fires can get outof control and spread very easily overvast areas.

d. A series of gigantic waves caused by anearthquake, volcanic eruptions or landslidesunder the sea.

e. Shortage of water.

f. The continual wearing of the soil by heavyrain, wind and poor land use may cause__________ .

g. The building up of large quantities of water, generallycaused by heavy rains that the soil is unable to absorb.

h. Very violent gusts of whirling,Funnel-shaped winds that spin alongover the ground.

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3. WS 2012 2013 Class4 May June Our Environment. Editeddoc

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