does our breathing planet earth expand & contract relative to the seasonal effect.?

Question

is there any study material available.

Answer 1

short answer: "no."

The earth's seasons are only resulting from your location and the tilt of the earth in relation to the sun. It was an interesting thought anyway.

Answer 2

Maybe you could clarify what you mean by "breathing planet" but in the sense that I am taking it, no there is no change. remember that when it is winter in one hemisphere, it is summer in the other so even if there could be some heating and cooling expansion from that, it is minimal, only on the very surface, and balanced by opposite effects in the opposite hemisphere.

Answer 3

i think so just go to like earth and all of its effects on google and you should come up with something!

Answer 4

no the Earth does not respire as a human would, i dont know where your source for the question came from but it is wrong

Answer 5

no there is not tidal wave that come with the season

Answer 6

NO it does not breathe.

Answer 7

Did you know that HEAT is a form of ENERGY? Yep, this form of energy
affects everything from fuel to all of the parts in a racecar. And, we're going
to look at a few experiments to learn how this form of energy acts and why we
need to know all about it. Benjamin Thompson (1753 - 1814), known in Europe
as "Count Rumford", was the first person to show that HEAT is a form of ENERGY.
The heat energy of a substance is determined by how active its atoms and molecules are. A hot object is one whose atoms and molecules are excited and show rapid movement. A cooler object's molecules and atoms will be less excited and show less movement. When these guys are in the excited state, they take up a lot of space because they're moving around so fast. When the atoms and molecules settle down, or cool down, they take up less space.


If a HOT high-energy atom comes into contact with a cool low-energy atom, the excited atom will loose some of its energy to the cool atom. The two atoms will settle into an energy level that's between where they each started out. That level is called Thermal Equilibrium. Did you know a lot of racecar drivers will let their engines cool down while idling before shutting it off after a hard race? They do this to let all of the internal engine parts come to Thermal Equilibrium.
Experiment: If you have a cup of really hot chocolate and want to cool it down, you may put and ice cube in the cup. After the ice completely melts, stir the chocolate. The hot chocolate and the melted ice have come to Thermal Equilibrium.
Now that you have an idea of what heat is, let's look at some of the effects this form of energy. Here's another Experiment. Blow up a balloon, but not all the way. Measure its circumference with a tape measure. Put the balloon in a refrigerator for about an hour, then take it out and measure it again. Did it shrink? Why?

It shrank because the air molecules inside the balloon slowed down and are taking up less space. Now put the balloon in direct sunlight. What happened after it warmed up? Why?

What do you think happens to all of the parts inside of an engine when they heat up?

From the above experiment, we learned a very important fact - heat causes things to "grow".
We call this Thermal Expansion. If things "grow" when heated, what do you think happens
to them when they get cold?
If you get a chance to check out some railroad tracks, notice the gaps between the rails. (Don't get run over by a train!). Thermal expansion and contraction is why those gaps are intentionally placed there, and why expansion joints are place in long highway bridges. You've probably felt expansion joints on old concrete highways. Remember the "thump - thump" sound as you rode over them?

Most materials expand (grow) and contract (shrink) when heated or cooled. Water is most dense at 4° C. When it gets colder than that, it actually expands! Expansion and contraction occur in all directions but they can be broken down into the following categories:
Linear Expansion, for objects such as connecting rods.
Area Expansion, for objects such as pistons.
Volume Expansion, for substances such as fuel in a fuel cell.
Another example of linear expansion is shown by the illustration directly above. Say a steel pushrod starts out cold in the morning at 32° Fahrenheit (T1). The engine warms up to 200° Fahrenheit; a difference (what engineers call Delta T) of 168 degrees. Each inch of the pushrod will expand a certain amount for every degree of temperature rise. This amount is known as the coefficient of linear expansion. Each material has it own unique "coefficient". For example, Aluminum has about twice the expansion rate as mild steel. Now you can see why engine builders need to know their stuff. They have to know how much clearance to build into engine assemblies to allow for thermal expansion and contraction!

It's extremely important to understand material expansion due to the heat that occurs in many areas of an internal combustion engine. One measurement that is critical is the piston-to-wall clearance. This is the difference between the diameter of the piston and the diameter of the cylinder wall.

Engine builders must know how much certain materials will expand when heated. For example, if an engine block is cast iron and a piston is aluminum, the piston and cylinder will expand differently. If the block and piston are made of the same material, the piston-to-wall clearance will expand at the same rate and the clearances will be different.
Another example of linear expansion can be found in piston-ring end gap. This is the space between the ends of a piston ring when installed in the cylinder. The ring undergoes linear expansion as the engine heats up, which causes the end gap to get smaller (the ring tries to grow together as it gets hot). If there is not enough end gap when the engine is put together, the ends of the ring may butt together when the engine gets hot and this could seriously damage the engine.

Racecars use different fuels such as gasoline, nitromethane and alcohol. These fuels produce different amounts of heat (and power) when burned.

Scientists use test devices such as the calorimeter to measure how much heat a particular fuel will produce.

How the calorimeter works: Water flows through a calorimeter at a certain rate (for example, 1 gallon per minute). A measured amount of fuel is burned and gives up its heat to the water. The water temperature is measured as it enters and leaves the calorimeter. The difference in temperature is the amount of heat contained in the fuel.
Did you know that the alcohol used in race engines has only about half the heat energy as gasoline for
a given amount? This is why engines burning alcohol must run bigger jets in the carburetor than those for gasoline engines. Did you also know that diesel fuel has more heat energy than gasoline? Another fact about diesel fuel is that it burns slower than gasoline. We'll investigate this further in another lesson.

The table at the right shows the "air/fuel ratios" required for engines using these types of fuels. You will learn more about this in another lesson.

Fuel Type Air/ Fuel Ratio
Gasoline 14.6:1
Methanol (a form of alcohol) 6.46:1
Ethanol (a form of alcohol) 8.94:1

Heat Transfer

Heat travels from a hot object to a cold object.
You might say that heat flows down a temperature hill.
So how does heat travel from one object to another?
By Conduction, Convection and Radiation.
Liquids and gases do not conduct heat very well, but they can transfer heat by CONVECTION. Look at the engine at the left. Water carries heat from a hot engine through a pump and delivers it to a radiator, whose duty is to give up heat to the air. Remember, with convection, heat is transferred from one place to another by the motion of the gas or liquid.

CONDUCTION is the main way for heat to transfer through solid materials. For example, the outside surface of an engine gets hot because heat energy is transferred from the combustion chamber through the metal to the outside surface.

All solid materials conduct heat, but some do a better job than others. Generally, metals are good conductors while porous materials are not. Styrofoam is an example of a poor conductor. It is a great insulator. Good conductors of electricity are usually good conductors of heat.

The easiest way to explain heat transfer by RADIATION is by the heat we feel from the sun. Even though the sun is about 93 million miles away from the earth, we still feel some of its heat. It travels to earth through the vacuum (no air) of space by way of rays!

If you hold your hand near a light bulb (but not too close!), much of the heat that you feel is from RADIATION. How else is the light bulb transferring heat to your hand. Would you guess CONVECTION or CONDUCTION?
Well, that's a quick look at HEAT ENERGY! We'll cover some of the same material in the lessons on Thermodynamics, Temperature, Heat Transfer and the Properties of Materials.

Talk to your teacher about how this subject applies to your racecar and what you can do to improve performance by applying the things you learned in this lesson. Remember, HEAT is what makes your racecar go!