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compass giving incorrect values when it’s close to other compass or close to a steel
objects. Pic 21.
Question 1: Why is a compass needle points north (Figure 21)?
Answer: ______________.
Question 2: Why put a compass on the mirror?
A. To be able to trigger an alarm
B. To see the face of a lost
C. To
light a fire in a sunny day
Question 3. Assume that you are in the woods and got lost, you urgently need to
find a way back home to the north, because it's getting dark. Unfortunately you have
no compass. Your actions?
Answer:__________________________________________________________
_.
Question 4. pic 22 shows a compass needle with it marked the northern (N) and
south (S) poles.
A compass
placed close to the magnet, as shown in the next picture.
A. Draw on this figure, the position of the compass needle and
select on it north
(N) and south (S) poles.
B. Explain the answer using your knowledge of magnets.
Task 31. Atmosphere
Atmosphere is the gaseous
envelope of a celestial body which
held by gravity around him. The
initial composition of the planet's
atmosphere is usually dependent on
the chemical
properties of the sun
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and the temperature during the formation of the planets and the subsequent release of
external gases. Then the composition gas shell evolves under the action of various
factors.
The Earth's atmosphere is largely a product of living organisms in it.
Approximate composition of the Earth's atmosphere: 78.08% nitrogen, 20.95%
oxygen, varying amounts of water vapor (an average of about 1%), 0.93% argon,
0.038% carbon dioxide and
a small amount of hydrogen, helium, other noble gases
and pollutants.
Question 1.
Determine the time of day on the picture 24.
A B C
Question 2.
Besides the Sun what it is other source of heat input to the Earth?
Answer:__________________________________________________________
Question 3.
Explain why June 22 in the northern hemisphere - the longest daylight hours?
Answer: ______________ __________________________________________.
Question 4.
List the main sources of air pollution
Answer: ______________.
Question 5.
Tell us how measure:
A temperature on the thermometer;
B. atmospheric pressure on the barometer;
C. wind speed and direction by weather vane.
Question 6.
Explain why the lowest the temperature during the day is observed after sunrise?
