They are made up of either igneous or sedimentary rocks. The rocks are changed due to the intense heat from magma and the fierce pressure from shifting tectonic plates. Even though the rocks get very hot, they do not melt. If these rocks did melt it would result in the formation of an igneous rock instead of a metamorphic rock. Metamorphic alteration causes the texture and mineral composition to change.
Heat flows from the warmer to the cooler object until they are both at the same temperature. Conduction is the movement of heat through a substance by the collision of molecules. At the place where the two object touch, the faster-moving molecules of the warmer object collide with the slower moving molecules of the cooler object. As they collide, the faster molecules give up some of their energy to the slower molecules. The slower molecules gain more thermal energy and collide with other molecules in the cooler object.
It absorbs much water vapour from the oceans and land vegetation through evaporation. As this air rises it cools. Eventually the water vapour condenses into clouds and it then creates precipitation. So the equatorial region is both hot and wet. The air rises, then spreads horizontally to the north and south.
At lower temperatures magma is viscous and as the temperature rises the material becomes less viscous and flows more easily. The higher the silicon oxygen content, the higher the viscosity. Silicon and oxygen combine and form strands, chains and sheets which also makes flow more difficult. The location of the volcano also plays a big role in how destructive it will be. At divergent plate boundaries you have high mafic temperatures and very thin crust so gases are unable to get trapped.
The continental crust floats much more freely on the magma. Movements deep within the Earth, which carry heat from the hot interior to the cooler surface, cause the plates to move very slowly on the surface, about 1 to 10 cm per year. Tectonic plates move because mantle rocks near the radioactive core are heated and the warmer rocks rise while the cooler
11.2 Particulate Model for Solids, Liquids and Gases A block of ice Solid molecules have a restricted motion = Solid A beaker of boiling water Gas molecules are able to move at extremely high speed = Gas A beaker of warm water liquid molecules have greater mobility = Liquid States of Matter Solid * In solids, the molecules are arranged close together in a regular pattern * Strong attractive intermolecular forces hold the molecules in position so they have definite shape and volume * They can only vibrate in their fixed positions Liquid * In liquids, the molecules are not arranged in a regular pattern and are slightly further apart then those in solids * The attractive intermolecular forces are not very strong. Thus, the molecules are able to move among one another, giving liquids its definite volume but not a definite shape. Gases * In gases, the molecules are widely spaced. Intermolecular forces are negligible * The molecules move about randomly with high speeds, colliding with the walls of the container, occupying any available space. Research on *phase changes for water* Heating curve (Please!!!!!!
7. Which of the following are the reasons why mercury is used in thermometers? I It is a good conductor of heat. II It has a high boiling point. III It contracts and expands uniformly at all temperatures.
These are boundaries where the plats move towards each other but 1 plate travels underneath (subduction). The less dense oceanic plate is the plate that subsides under the denser continental plate. The oceanic plate with melt as it falls to the asthenosphere creating a mantle plume where we expect to see a strombolian (cone) volcano. These volcanoes are typically tall cone shaped volcanoes. They are as such because they lava is andesitic/rhyolitic which means the lava contains 55%+ silica content.
Some of this long wave terrestrial radiation travels upward, where it may be reabsorbed by other gas molecules. The remainder travels downward and is again absorbed by the earth. Thus, the earth’s surface is being continually supplied with heat from atmosphere as well as from the sun. These processes that take place between the earth’s surfaces will keep the earth average temperature warmer than it would otherwise be. Plate tectonics could also led to climate change.
Natural Causes of Climate Change The earth’s climate is influenced and changed through natural causes like volcanic eruptions, ocean current, the earth’s orbital changes and solar variations. Volcanic eruptions - When a volcano erupts it throws out large volumes of sulphur dioxide (SO2), water vapour, dust, and ash into the atmosphere. Large volumes of gases and ash can influence climatic patterns for years by increasing planetary reflectivity causing atmospheric cooling. Tiny particles called aerosols are produced by volcanoes. Because they reflect solar energy back into space they have a cooling effect on the world.