NEW
Font size
S
M
L
XL
WorksheetsWater For Life
Total questions: 20
Worksheet time: 10mins
Name
Class
Date
1.
The earth is made up of about 65% water yet only a small % of this is drinkable. This percentage is closest to
a)
20
b)
60
c)
3
d)
11
2.
Water molecules have a negatively charged end and a positively charged end . This property means that water is
a)
polar and has surface tension
b)
non polar and has surface tension
c)
liquid at room temperature
d)
dissolves non polar substances
3.
These potato slices had a mass of 100 g. They were put in an oven and dehydrated for 3 days. Their dried mass was 20g. What % of potato is water
a)
20%
b)
80%
c)
100%
d)
60%
4.
A plant living in the dessert would posses which adaptations to survive
a)
large leaves and long tap roots
b)
sunken stomates and fast growth
c)
sunken stomates and small silver leaves
d)
water storage trunk and lange leaves
5.
The desert Bilby excretes uric acid crystals instead of liquid urine. This is
a)
a structural adaptation to conserve water
b)
a physical feature to stop overheating
c)
a behavioural adaptation to avoid heat loss
d)
a physiological adaptation to conserve water
6.
The desert mouse has large ears . These ears are
a)
a structural adaptation to aid in heat loss
b)
a behavioural adaptation to aviod heat loss
c)
a behavioural adaptation to conserve energy
d)
a structural adaptation to absorb heat
7.
The spinifex rolls its leaves to conserve water This works because
a)
By rolling its leaves it reflects more heat
b)
rolling protects the stomates on the underside of the leaf from direct sn
c)
rolling increases the rate of transpiration
d)
rolling protects the grass from the wind
8.
Gum trees have a number of adaptations to survive dry weather. These include
a)
dropping leaves and turning their pale side to the sun
b)
wind borne seeds
c)
water storage in their trunk
d)
large leaves with a thin cuticle
9.
Australia suffers from saline soils in some areas. Here salt has risen to the top of the soil ,poisoning it. The main cause of salinity is
a)
Ploughing soils
b)
removing large trees
c)
growing crops
d)
irrigation
10.
A fertiliser
a)
is a chemical that kills insects
b)
can be organic or inorganic
c)
makes plants flower
d)
contains every nutrient a plant needs
11.
Eutrophication is best described as
a)
good algae growth in a waterway
b)
uncontrolled and excessive algal growth
c)
necessary algal growth to sustain life
d)
pollution that arises from sewage spills
12.
A micro plant nutrient is best described as
a)
a nutrient plants need in small quantities
b)
a nutrient plants need in large quantities
c)
a nutrient plants and animals need in large quantities
d)
a nutrient that plants and animals need in tiny amounts
13.
Algal blooms are caused by
a)
heavy flooding rain
b)
excess nutrients entering a waterway
c)
insufficient nutrients entering a waterway
d)
too many animals living in a waterway
14.
an indicator organism
a)
can be counted to see if water is healthy
b)
always indicates that water is safe
c)
are in large numbers if water polluted
d)
can be used predict water movement in a river
15.
Bioaccumulation is the process where
a)
a toxin concentration increases along a food chain
b)
a toxin concentration is increased by more spraying
c)
a toxin is eaten at high levels by an animal
d)
top order consumers are exposed to toxins
16.
When salt is stirred till dissolved in a glass of water
a)
The salt is the solvent
b)
a solution is formed
c)
the water is the solute
d)
the solution can settle out over time
17.
A catchment area is
a)
all the waterways in an area
b)
all the surrounding land that runs into a river
c)
is where water pools in landforms
d)
is very small area that feeds into a river
18.
True or false A solution can be filtered
a)
True
b)
False
19.
In dissolving substances the general rule is
a)
like dissolves like
b)
non polar dissolves polar
c)
polar dissolves insoluble
d)
water is the universal solute
20.
Transpiration is
a)
How animals lose water
b)
how plants conserve water
c)
how plants lose water
d)
is highest in desert plants
Reset
