What is the phenomenon that explains why hot bodies are less dense than cold bodies in fluids?
Thermal expansion
Thermal conduction
Convection
Contraction of matter
Maximum height of the ionosphere 460 km
False
True
Ice fish adapts to live in frozen waters where…
Lives in warm water
Secretes antifreeze proteins
Contains large amounts of hemoglobin
Moves at high speed to avoid freezing
What is the most important climatic factor that affects other factors?
Heat
Atmospheric pressure
Humidity
Wind
Which of the following materials is considered a high thermal conductivity?
Wood
Glass
Copper
Plastic
All of the following gases make up less than 1% of the volume of the atmosphere except ...
Ar
N2
H2
Co2
What is the physiological response of organisms living in areas with low atmospheric pressure?
Reducing the number of red blood cells
Increasing the number of red blood cells
Increasing the respiratory rate
Reducing physical activity
Which of the following processes depends on the presence of oxygen?
Combustion process
Excretion process
Photosynthesis
All of the above
What is the main property that distinguishes thermal radiation from other methods of heat transfer?
It moves at a higher speed than conduction
It can spread in a vacuum
It only occurs in gases
It depends on the presence of a material medium
One of the beneficial effects of ultraviolet rays is that it helps in….
Increase in atmospheric pressure
Cooling the air
Formation of ozone
Decomposition of gases
Which of the atmospheric phenomena is considered a result of rapid fluctuations in atmospheric pressure?
Thunderstorms
Calm winds
Fog
Snowfall
Low air pressure is formed when the temperature rises and high air pressure is formed when the temperature drops.
What are the characteristics of polar winds?
Dry and cold winds
Stormy and rainy winds
Calm and warm winds
Moist and warm winds
What is the feature that helps the thorny lizard live in the desert?
Ability to fly
Small channels on its skin to collect moisture
Thick skin prevents water evaporation
Ability to store water for long periods
What is the process in which heat is transferred from one particle to another in solid materials without the movement of the particles themselves?
Reflection
Conduction
Radiation
What is the main source of heat and light on Earth?
Volcanic activity
The Sun
Meteors
The Moon
Nitrogen oxide is present in a very small percentage because nitrogen gas…
Useful in the combustion and respiration process
Very harmful to the environment
Present in a small percentage
Needs special conditions to react
Why is the presence of the ozone layer vital to living organisms?
Because it increases the percentage of argon
Because it helps in breathing
Because it prevents harmful ultraviolet rays
Because it enhances combustion processes
The harmful effect of ozone near the Earth's surface can be reduced by...
Reducing chemical emissions
Increasing nitrogen levels
Reducing oxygen
Reducing water vapor
What device is used to measure the humidity in the air?
Hygrometer
Thermometer
Barometer
Anemometer
Normal atmospheric pressure 101300 N/m2
What is the result of the difference in atmospheric pressure?
Complete calm weather
Blowing wind
No wind
Increased temperature
The main factor that affects the weather in certain areas is...
Human activity only
Weather factors such as atmospheric pressure and temperature
Distance from oceans
Type of agriculture in the area
Nitrogen is largely a carrier gas because it...
Make up most of the atmosphere
Requires special conditions to react
Reacts quickly with other elements
Does not react with oxygen
How does increasing relative humidity affect plants?
Does not affect plants
Decreases the rate of transpiration
Increases the rate of root growth only
Increases the rate of transpiration
Solar radiation affects the ionosphere, resulting in…
Reducing atmospheric pressure
Ionization of atoms
Cooling the layer
Does not affect it
How does low atmospheric pressure affect the amount of oxygen available for breathing in high altitudes?
The amount of oxygen decreases
Causes an increase in blood pressure
The amount of oxygen increases
Remains constant
In which of the following cases can nitrogen gas react with other gases?
At low temperatures
Under normal conditions
When in contact with oxygen
When lightning occurs
What is the definition of humidity in meteorology?
The amount of oxygen in the air
The amount of water vapor in the air
Air temperature
Air pressure
Water vapor affects weather and climate as it ...
Causes rain only
Does not affect the weather
Plays a role in forming clouds
Increases the concentration of oxygen
The gas that constitutes the least percentage in the atmosphere is?
Oxygen
Argon
Carbon dioxide
Nitrogen
What causes the temperature to vary between different regions?
Population density in the region
Difference in height above sea level
Type of soil in the region
The effect of the sun on the surface of the Earth and water
The direct effect of increased carbon dioxide in the atmosphere is...
Reduced cloud cover
No effect
Global warming
Increased oxygen
How do winds affect the weather?
Causes rain in all areas
Winds prevent rain
Move hot and cold air, which affects temperatures
Increases humidity only
It is preferable for aircraft to fly in the stratosphere because of...
Horizontal movement of the atmosphere
Increased clouds
High temperature
Vertical movement of the atmosphere
What is the main effect of climate on living organisms?
Affects only the distribution of living organisms
Affects only the behavior of organisms
Affects the distribution, growth and behavior of organisms
Does not affect the growth of organisms
Which of the following gases can easily react with other elements?
Ozone
Which layer of the atmosphere contains the most ozone?
Stratosphere
Ionosphere
Troposphere
Mesosphere
Ionosphere Used in long-distance wireless communications
Mercury barometer measurement at sea level .........
776 mmHg
706 mmHg
670 mmHg
760 mmHg
Meteors falling towards the Earth burn at an altitude of…
640km
50km
70km
90km
It is considered... The unit of measurement of atmospheric pressure used on meteorological maps
Millibar
mmHg
Bar
One of the negative effects of ozone near the Earth's surface is that it...
Protects living organisms
Toxic and harmful
Harmless
Enhances plant life
Which of the following gases plays a major role in the combustion process?
Water vapor
Why are some regions warm and sunny, while others are cold and dry?
Due to the difference in population
Due to its geographical location and proximity to the equator or poles
Due to the use of renewable energy
Due to air pollution only