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Integrated Science — First Secondary

Integrated Science — First Secondary

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Question bank: Module 11 — Physical Factors and Their Effect on the Atmosphere and on Living Organisms

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  • Questions count: 45
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1.
Which physical factor directly affects pressure, wind, humidity and rainfall?
heat
light colour
soil
sound
2.
The temperature scale used in Egypt is the
Fahrenheit scale
Celsius scale
Kelvin scale
Rankine scale
3.
The relation between kelvin and Celsius is
T = t − 273
T = t + 273
T = 1.8t + 32
T = t/273
4.
The relation between Fahrenheit and Celsius is
tF = 1.8 tC + 32
tF = tC + 32
tF = 1.8 tC − 32
tF = tC/1.8
5.
The boiling point of pure water on the Fahrenheit scale is
100 °F
180 °F
212 °F
373 °F
6.
A body at 283 K is at what Fahrenheit temperature?
10 °F
30 °F
50 °F
70 °F
7.
The transfer of heat through a solid without movement of its particles is
convection
conduction
radiation
evaporation
8.
Heat transfer through fluids by currents is
conduction
convection
radiation
condensation
9.
Heat from the Sun reaches the Earth by
conduction
convection
radiation
none of them
10.
A good conductor of heat is
cork
wood
copper
air
11.
Birds soar without flapping their wings by using
conduction currents
rising warm-air currents (thermals)
radiation
cold air
12.
In winter the wood frog survives freezing by storing large amounts of
proteins
glucose
fat only
starch
13.
Which expresses an adaptation to freezing?
producing much glucose before hibernation as in the wood frog
producing much fat as in the ice fish
producing antifreeze glucose as in the ice fish
producing antifreeze proteins as in the wood frog
14.
The ice fish has no
gills
haemoglobin
heart
skeleton
15.
The thorny devil lizard collects water using
tiny channels on its skin
its tail
its tongue only
its eyes
16.
The standard atmospheric pressure equals
1.013 × 10³ N/m²
1.013 × 10⁵ N/m²
1.013 × 10⁷ N/m²
76 mm Hg
17.
The instrument used to measure atmospheric pressure is the
thermometer
hydrometer
barometer
hygrometer
18.
The unit used for atmospheric pressure on weather maps is the
pascal only
millibar
joule
newton
19.
Lines on a weather map connecting points of equal pressure are
isotherms
isobars
contours
meridians
20.
8 millibar equals
8 N/m²
80 N/m²
800 N/m²
8000 N/m²
21.
In a mercury barometer at sea level the mercury height is
76 mm
760 mm
7.6 m
76 m
22.
Atmospheric pressure at a mountain top is lower than at sea level because
the air column above is shorter and thinner
gravity is stronger
temperature is higher
humidity is lower
23.
At high altitude the body increases the production of
white blood cells
red blood cells
platelets
plasma proteins
24.
Climbers may suffer rupture of tiny nose capillaries because
the pressure outside the body is much lower than inside
the temperature is high
the humidity is high
the wind is gentle
25.
The pigment in red blood cells that carries oxygen is
chlorophyll
haemoglobin
melanin
keratin
26.
Platelets are important for
defending against bacteria
blood clotting
carrying oxygen
carrying hormones
27.
The liquid part of blood is
serum cells
plasma
lymph nodes
platelets
28.
Normal blood pressure for a healthy adult is about
60/40 mm Hg
120/80 mm Hg
200/120 mm Hg
80/120 mm Hg
29.
Systolic pressure is measured when the heart
relaxes
contracts
stops
fills slowly
30.
Wind blows from
low pressure to high pressure
high pressure to low pressure
cold to hot only
sea to sea
31.
Polar winds are
hot and humid
cold and dry
hot and dry
cold and humid
32.
Wind speed affects
distribution of heat and moisture
only the colour of the sky
only sound
nothing
33.
The plant tissue made of living cells with thin cellulose walls, many chloroplasts and large vacuoles is
parenchyma
collenchyma
sclerenchyma
xylem
34.
Collenchyma cell walls are
thin cellulose only
unevenly thickened with cellulose and pectin
thick with lignin
absent
35.
The tissue that gives the greatest mechanical strength to plants is
parenchyma
collenchyma
sclerenchyma
epidermis
36.
Mature sclerenchyma cells are usually
living
dead
green
dividing
37.
Humidity is
the amount of oxygen in the air
the amount of water vapour in the air
the temperature of the air
the pressure of the air
38.
Humidity is measured with a
barometer
hygrometer
hydrometer
anemometer
39.
When the air holds the maximum water vapour it can hold at a given temperature it is
dry
saturated
polluted
frozen
40.
The comfortable range of relative humidity for humans is
0–20 %
20–40 %
40–60 %
80–100 %
41.
In high humidity, sweat evaporation
speeds up
slows down
stops completely
is unchanged
42.
In dry air, the body may suffer
chapped lips and dehydration
swelling
frostbite
hypothermia
43.
When humidity is low the kidneys
excrete more water
reabsorb more water, making concentrated urine
stop working
produce no urine
44.
Increased relative humidity around a plant
increases transpiration
decreases transpiration
stops photosynthesis at once
has no effect
45.
The relative humidity is usually lowest
at dawn
in the afternoon
at midnight
at sunset
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