WorksheetsEnd of Unit Grade 4 Science Test
Total questions: 10
Worksheet time: 5mins
Which statement is TRUE?
River is the only source of water.
Water caught in drums and pans is the best source.
Rain is the source of ALL water.
The sea supplies water everywhere for domestic purposes.
Which of the following are natural water bodies?
well, dam, sea, river
ocean, river, sea, lake
reservoir, pond, lake, tank
ocean, dam, lake, tank
No rain fell for a long time. Water was scarce. The animals are lean. The plants are no longer green. What is being described in the verse above?
drought
famine
flood
weather
A man was seen throwing garbage into a river. What effect will his action have on the river? It will cause___.
air pollution
drought
erosion
water pollution
Water pollution can be reduced by doing all of the following EXCEPT_
using natural fertilizer such as manure
keeping your surrounding clean
using proper garbage dump
piping waste water from factories into the sea
Water can be made safe for drinking by__
leaving it to settle
boiling it or adding chlorine bleach
freezing it
placing it in sunlight
Which is NOT a water-borne disease?
typhoid
cholera
influenza
diarrhoea
All of the following will prevent water-borne diseases EXCEPT__
contaminated water supply
always use the toilet properly
wash hands before handling food
keep your kitchen and toilet clean
When water is heated it ____.
condenses
evaporates
freezes
precipitates
Heavy rain along with hail fell yesterday. Which word BEST describes what took place?
condensation
conservation
precipitation
evaporation
