There are many ways to identify when a physical change has occurred. This can be done by recognizing reversible changes or eliminating chemical changes.
Physical changes involve state changes in matter and energy. These changes cause the matter to change form, but no new material is generated. Matter may alter in size, shape and color. When substances are combined but do not chemically react, physical changes take place.
A physical change can be recognized if it is reversible, especially if it involves a phase transition. For instance, if water is frozen into an ice cube, it can be melted back into water.
Sometimes eliminating the potential of a chemical transformation makes it easier to spot a physical change. There may be a number of signs that a chemical reaction has taken place.
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Full question: How to identify physical change?
He claimed that they were one large supercontinent called Pangaea. His evidence for his claim was that the general shapes of the separate continents and how they can fit together if you arrange them. He noticed patterns in the mountain ranges; when all the continents are together the ranges line up with one another.
Answer:
- Interaction with land
- Conctact with colder water
- Strong vertical wind shear
Explanation:
- The interaction with land: a hurricane needs evaporation from the ocean surface to survive, when it touches land the hurricane is separated from its energy source since the air masses over the ocean are drier, less moisture is carried into the storm and air is cooled and then sinks disrupting hurricane's circulation.
- Getting in contact with colder water: when a hurricane moves northward out of the tropical ocean into mid-latitudes, it begins to get in contact with colder water, this makes it lose the warm water source, less moisture is evaporated into the atmosphere to supply clouds and this weakens the storm.
- Strong vertical wind shear: a change in wind direction or speed with height can enhance the mixing of drier environmental air into the storm eyewall leading to a column of cool air that rapidly sinks into the grounds, this inhibits the intensification of the hurricane. This kind of wind shear can be generated by fast upper-tropospheric winds.
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Explanation:
A hard boiled egg is made up of shell, egg white and the yolk.
The shell is the tiny calcic-cover round the egg that protects the internal component. It is a very thin and brittle layer. The thinnest of all.
This corresponds to the crust. The crust is also brittle and it is in the outer most part of the earth.
The egg-white part is the largest part of the egg. It is relatively softer than the shell.
This can be likened to the mantle. The mantle is the largest portion of the internal part of the earth
The inner most part is the yolk. It is similar to the inner core of the earth. It is thicker than the crust.
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