...A nearly closed system capable of changing the surface of the earth physically, chemically and biologically through a continuous change between the three states of water
Rain cycle
hydrological cycle
Water cycle
Natural cycle
All of the following gases, when reacting with water vapor in clouds, form rain that corrodes metal structures except ....
NH3
No2
So2
Co2
Acid rain leads to the erosion of building facades due to .....
The formation of new fragile compounds
Its descent in large quantities and submerging them
Severe collision with it and its fragmentation
All of the above
Which of the following layers of the Earth represents the solid part of the Earth ....
Atmosphere
Biosphere
Hydrosphere
Lithosphere
Fresh water that is formed as a result of water seeping through the pores of the soil from sedimentary rocks
Rivers
Bays
Lakes
groundwater
Chemical bonds between the hydrogen atom and the oxygen atom in the water molecule
hydrogen bond
single covalent bonds
Water is not a polar compound
True
False
All of the following lead to an increase in the percentage of water vapor in the atmosphere except ....
The process of rainfall
The process of respiration in plants and humans
The process of transpiration in plants
There is no correct answer
Acid rain is a rain resulting from the chemical reaction of water vapor in clouds with compounds present in the atmosphere
Nitrogen gas represents a large part of .....
The main processes involved in the water cycle in nature are ( Evaporation-Condensation- Rain or snowfall)
pH of seawater = .........
6.4 : 7.5
7.5 : 8.4
7.4 : 8.5
6.5 : 8.5
when Acid rain falling on rocks it works to break them up and decompose them.
Acid rain reacts with .....
Alkalis
Basic salts
Basic oxides
Acid oxides
Water is in the state of ..... at a temperature higher than 100°© and is considered one of the components of the .....
Vapor - water
Vapor - atmosphere
Solid - ice
Liquid - atmosphere
The ratio between the land area to the water area on planet Earth .....
Greater than one
Less than one
Equal to one
The water reservoir that is formed as a result of water seeping through the soil and rocks downwards and some of it comes out in the form of springs is ...
Groundwater
... expresses the transfer of water from the soil to the atmosphere through the pores of plant leaves
The process of transpiration
The process of respiration
The process of evaporation
Precipitation
Water is present on the surface of the Earth in .....
Three physical states
Two physical states
One physical state
Four physical states
PH of freshwater = ..........
7.5 : 4.5
which of the followings is true
The boiling point of water increases Because the water molecules are linked to each other by a single covalent bonds
The boiling point of water decreases Because the water molecules are linked to each other by a hydrogen bond
The boiling point of water increases Because the water molecules are linked to each other by a hydrogen bond
The boiling point of water decreases Because the water molecules are linked to each other by a single covalent bonds
The biological process that occurs in plants and animals and contributes to the formation of rain is .....
Respiration
Infiltration
Evaporation
Transpiration
when we Adding ammonium chloride salt to water in relation to pH
It hydrolyzes and causes an increase in the concentration of negative hydroxide ions and decrease in the concentration of positive hydrogen ions, making the solution acidic and the pH value more than 7
It hydrolyzes and causes a decrease in the concentration of negative hydroxide ions and an increase in the concentration of positive hydrogen ions, making the solution acidic and the pH value less than 7
It hydrolyzes and causes an increase in the concentration of negative hydroxide ions and decrease in the concentration of positive hydrogen ions, making the solution acidic and the pH value less than 7
It hydrolyzes and causes an increase in the concentration of negative hydroxide ions and an increase in the concentration of positive hydrogen ions, making the solution acidic and the pH value less than 7
Frozen water represents ..... of the water on the Earth's surface
80%
1%
2%
3%
A bond that arises between a water molecule and another water molecule and is responsible for the high boiling point of water
The solution resulting from dissolving sodium bicarbonate salt in water is acid
Water has an important role inside the cells of living organisms
There are two main opposite processes in the hydrological cycle, which are
Condensation and freezing
Evaporation and snow
Melting and boiling
Evaporation and Condensation
The highest percentage of water in the Earth's crust is found in .....
Seas and oceans
Glaciers and polar regions
Rivers and freshwater lakes
Springs and wells
in the water the electronegativity of the oxygen atom is ........ the electronegativity of the hydrogen atom
greater than
equal
less than