7312071
Description
Mind Map by elsa carricajo, updated more than 1 year ago
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Created by elsa carricajo
almost 8 years ago
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Hydrosphere
- The hydrosphere
- liquid
- Most liquid water is seawater
- A small percentage is inland water, which is made up of both surface water (lakes and rivers)
- groundwater (underground water
layers)
- Fresh water: very low salt content (inland
water) Brackish water: moderate salt
content (inland water) Salt water: high salt
content (seawater)
- Most liquid water is seawater
- solid
- Most solid state water exists as snow and
ice in the polar ice caps and glaciers.
Liquid water freezes below 0 °C and
transforms into a solid.
- Most solid state water exists as snow and
ice in the polar ice caps and glaciers.
Liquid water freezes below 0 °C and
transforms into a solid.
- gas
- Water is considered a gas
in the form of water
vapour. Most water
vapour exists in the
Earth’s atmosphere as
evaporation from surface
water.
- Water is considered a gas
in the form of water
vapour. Most water
vapour exists in the
Earth’s atmosphere as
evaporation from surface
water.
- liquid
- The distribution of water on Earth
- Water in seas and oceans
- Composition
- Sea water is a mixture of
mineral salts: the most common
component is sodium chloride
(common salt). It also contains a
large quantity of magnesium
salts.
- The salt in seawater affects
density: water with a higher
salt content has a greater
density.
- Seawater temperature
depends on depth:
temperatures are lower in
deeper bodies of water and
warmer in shallower areas.
- Sea water is a mixture of
mineral salts: the most common
component is sodium chloride
(common salt). It also contains a
large quantity of magnesium
salts.
- Movement
- Waves occur on the surface
of the water. They are mainly
caused by the wind and can
vary in strength.
- Tide is a regular movement in
which the sea level rises and
falls. This is caused by the
gravitational force of the Sun
and the Moon.
- Ocean currents are horizontal
movements of water within seas
and oceans. Currents have
distinct densities and
temperatures. They are
important because they
redistribute heat and salt to
different areas of the Earth.
- Waves occur on the surface
of the water. They are mainly
caused by the wind and can
vary in strength.
- Composition
- Inland water
- River
- Delta
- Lagoon
- Lake
- Estuary
- Marsh
- Wetlands
- River
- Grundwater
- Groundwater is water that is
stored underground, beneath
the surface of the Earth.
- Groundwater is water that is
stored underground, beneath
the surface of the Earth.
- Glaciers
- Glaciers are large masses
of slow-moving ice.
- Glaciers can only exist in areas
of the Earth where the
temperature is always, or
nearly always, below 0°C.
- Glaciers move downhill very slowly.
This is because of their immense
weight and the gravity of the Earth.
Their movement erodes the original
landscape and forms U-shaped
valleys.
- Glaciers are large masses
of slow-moving ice.
- Water in seas and oceans
- The water cycle
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