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Is it true that for the past 40 years the global temperature has been increasing?

Yes, significantly since the 1880's.


What is the half life of U-235 according to the graph?

The half-life of U-235 is approximately 700 million years according to the graph.


How much has the climate changed for Ireland in the past 50-75 years?

Since 1930 Ireland's average temperature has risen by 0.7° Celsius.Of the 15 warmest years in Ireland, ten have occurred since 1990.There is a trend of increased rainfall along the north and west coasts.


What is an HR diagram and what does it mean to the stars?

A HR diagram(abbreviation of Hertzsprung Russel diagram) is a graph of stars' surface temperatures(x axis) versus their luminosities(y axis). Basically, what we do is observe a lot of stars, find each star's temperature and luminosity and put them all there on the graph. This graph is important in understanding stellar evolution due to a theorem called ergodic theorem. Let us see how. When a star is born, it has a particular luminosity and temperature. As it lives its life, it's luminosity and temperature keeps changing, and finally it finishes it life. Basically, what I mean is that you take a star when it's born, find its temperature and luminosity, put that on a graph that reads luminosity versus temperature for y and x axis respectively, wait a few million years, see the star again, find it's then temperature and luminosity, put that on that graph, and keep doing it till the star dies. What you get then is a graph that tells you how the star's luminosity and temperature changed as it lived it's life. With luminosity and temperature, you can calculate all other stuff about the star and write down it's biography! Do that with all stars, and you get loads of biographies of different stars, and you become a master of stellar evolution! But wait, there is an issue here...a star typically lives it's life in the order of a billion years. We humans evolved one million years back, we discovered telescopes four hundred years back, and a typical human lives a hundred years, how will we understand stars with such little time?! The answer is HR diagram!! Now back to ergodic theorem, it says that seeing a thousand stars as they appear to us now and finding their temperature and luminosity and then putting it on HR graph is same as following a star all it's life! Essentially a shortcut to understanding stars! That's the big advantage of HR diagram in studying stars... of course, the focus of my answer was the importance of ergodicity in studying stars but not explaining in detail the concept of ergodicity. That you can find in any statistical mechanics text book or maybe I can explain that somewhere in answers.com soon! Cheers, hope my answer helped!:)


What is the temperature of Van Maanen's Star?

The temperature of Van Maanen's Star is estimated to be around 6,300 K, which is relatively cool compared to other stars. It is a white dwarf star that has cooled down over billions of years since its formation.

Related Questions

What type of graph would best show the highest and lowest temperature for each of the last four years?

line graph


How is a line graph is used to decision?

Line graphs let us use data we have to predict what will happen in situations where we don't have the data yet. So we can create a line graph with the information we have. Then we look at a given point on the graph to tell us about some piece of data we wish to predict.For example, if we made a graph of temperature vs years. We might see how much it goes up each 100 years. We could then look at the year 2011 and predict the temperature.


Would the number of hurricanes in the US in the past ten years be a bar graph or a circle graph?

It'd probably be a line graph, but out of those two, I'd say bar graph.


Is thomas crapper cool?

Since Mr. Crapper has been dead for several years, he is probably ground temperature.


Is it true that for the past 40 years the global temperature has been increasing?

Yes, significantly since the 1880's.


What is the half life of U-235 according to the graph?

The half-life of U-235 is approximately 700 million years according to the graph.


Where can you get a graph about giant pandas population from 1960 every 10 years and ending at 2010?

On google- type in "panda population graph from 1960 for every 10 years to 2010


What is the use of line graph?

The use of a line graph is to show changes over time [months,weeks,years,days,ect;]


What type of graph has the x-axis has evenly spaced years and the y-axis increases by multiples of ten?

That would be a line graph.


Each peak on the graph represents a sunspot maximum In which years do these maxima occur?

We'll get right to work on that one as soon as we get a look at the graph.


What type of graph would be best to display growth over the last 5 years?

The best graph in my opinion would be a line graph . Line graphs are used in most buisness graphs .


What do you think the graph would look like if factories and motor vehicles did not burn fossil fuel and produce carbon dioxide's?

Almost identical to what Vostok look like today. Man only produces about 3% of all CO2 and much of that from sources that would occur naturally in any event.To get a better idea of what CO2 graphs have looked like historically, check out the Vostok site. There you will see that CO2 has always followed temperature by about 800 years. The current warming cycle started about 10,200 years ago, so we would expect to see CO2 levels rise that past 9,600 years, just like they have.A:The look of the graph would depend on how long they had been using renewable energy (solar, wind, water, etc) but we would hope to see that the steady rising trend on the temperature graph was stopping and even beginning to come down. The earth's temperature has been rising steadily since we started burning fossil fuels (coal, oil and natural gas) 250 years ago, and it has been rising even more rapidly since 1980. Carbon dioxide can remain in the atmosphere for close to 100 years, so we hope that these factories and cars have made the change to renewable energy long before.