Atmosphere
Weather elements
Weather systems
What happens in the air?
Surprize me!
100
Atmospheric layer in which all weather conditions occur.
Troposphere
100
What is the normal atmospheric pressure at the sea level?
760 mmHg (millimeters mercury)
100
What are the two weather systems called and how is the pressure different in each one?
An anticyclone (high pressure in the center) and a cyclone or a depression (low pressure in the center).
100
What is an overcast?
Cloudy weather with more than 95% of the sky covered by clouds.
100
Name three states of matter the water exists on Earth.
Ice - liquid water - water vapour (or steam)
200
Name the colours, not the words with no more than 1 mistake!
It was hard:)
200
Name at least 4 weather elements and units of their measurement.
Temperature (degrees Celcius), pressure (hPa or mmHg), humidity (%), cloudiness (octas), wind speed (m/s) and direction, precipitation type, UV index...
200
How does the air move in a cyclon in the Northern hemisphere?
Counter-clockwise.
200
Paint your nails with a permanent marker and win!
Yeeeeah!
200
What happens with moisture in the air when it sinks? Why?
It evaporates! Because when the air sinks it gets warmer.
300
How does the air temperature change in the lowermost atmospheric layer? Give the amount of change.
It decreases by about 6°C for every 1000 m of altitude.
300
Name at least 4 types of precipitation.
Rain, snow, hail, sleet, fog, mist, dew...
300
What happens to the air in the depression?
Low pressure means that there are fewer air molecules next to the ground. Air rises - cools - water condenses.
300
Explain how clouds form.
Warm air rises - cools down - water condenses
300
Show the word with a pantomime!
ISOBAR - the line of equal pressure
400
What are parts of the lower atmosphere with different properties called?
Air masses. They have different temperatures and humidity (water content).
400
Sing a popular song!
Bravo!!!
400
Act out with your teammates how the weather changes when a winter anticyclone comes.
High pressure means clear sky, so it is cold in winter because the heat goes away into space during the night.
400
Where is the wind speed higher on this map? Why?
To the South of Australia the wind speed is higher, because the isobars are closer to each other.
400
Why does a heavy rain start when the cold front comes?
Cold air mass replaces the warm one, that is moving up the wedge of a cold air. It rises quickly, so the clouds grow fast and a heavy rain starts.
500
Name the layer of the atmosphere where Aurora Borealis occurs.
Thermosphere
500
Relative humidity is how much water vapour the air contains. Why is it given in percents and how to increase the relative humidity without adding water?
It is given as a persantage of maximum amount of vapour that the air can contain at a given temperature. Decrease the air temperature to increase the relative humidity without adding water.
500
Describe the weather in one location on the map:
The teacher assessed your answer.
500
What pressure and what weather sysytem is here now?
High pressure system. Anticyclone.
500
Say the names of all your classmates backwards in 1 minute.
Wow, that's hard!