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# Help with Earth and Space Homework?

Topic: space homework
July 16, 2019 / By Ohndreea
Question: A star might be much brighter than it appears to be. This is called the star's absolute magnitude. The difference in apparent magnitude and absolute magnitude is due primarily to the star's - A- surface temperature B- motion through universe C- diameter D- distance from earth

## Best Answers: Help with Earth and Space Homework?

First of all, this is a horribly worded question, and you can tell your teacher I said so (and you can tell him I have a college degree in physics). How can something be "brighter than it appears to be"?? A star's absolute magnitude is defined as the magnitude (brightness) it would appear to have if you were 10 parsecs (about 33 light years) away from it. So I think what your teacher meant to say was: If you put yourself 33 LY away from a star, it might have a brighter apparent magnitude (i.e. would "look" brighter) than it does when seen from earth. But that sort of gives away the answer: D.
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We found more questions related to the topic: space homework

Originally Answered: If we didnt explore everywhere on this earth why run to space?
And oddly enough, there *are* people exploring those areas. looking for them, mapping them when found, etc. Have you ever read National Geographic? or seen some of their videos / television programs? Caves, deserts, mountains, tundra, canyons, sinkholes, rivers, lakes, seas, oceans,. Several billion dollars *are* spent on exploring and learning about these environments every year. Several billion dollars are spent on... numerous different areas of human interest. Space is just one. Tens of billions are spent each year on energy research. *Trillions* are spent each year by humans on military equipment and fighting wars. The amount spent by mankind on space is less than 1/10th of 1% of the amount spent by us on trying to kill each other, and protecting ourselves from *others* that might try to kill us. The amount spent by mankind on space exploration is roughly 3% of what they spend on ''recreational'' drugs. Or about 10% of what is spent on *stopping* the production and distribution of ''recreational'' drugs. Which bizarre spending did you really want to complain about??
Originally Answered: If we didnt explore everywhere on this earth why run to space?
Great question! The oceans are a must for exploration. There is more unexplored territory there than on Mars or the moon. There are plenty of good reasons to explore space right now, though. One of the most important reasons is survival. The earth has mass extinction events regularly from asteroids, comets, disease, solar events, galactic events. Humans will not survive if we only have one planet. An event like this could happen tomorrow as evidenced by the recent impact over Russia which left over 1,000 people injured. There is a wealth of science to be discovered everywhere we look. Attaching a priority is difficult. But there are some pretty good reasons to look to space. Also, here are technologies developed from space explotation: GPS your cell phone and more stuff found here: http://en.wikipedia.org/wiki/NASA_spin-off_technologies

Kenya
I dont think its b for sure! But "A" makes sense. I dont think it can be c because usually the larger the sun is (like red giants for example) the older it is, which actually produces a lower tint of white which turns to yellow then orange and eventually to red. This statement also supports "A" because the older the sun is, the lower the surface temperature! D would also make sense because the farther away something is, the dimmer it seems! Well anyway you should look up the star's absolute magnitude on google or something, good lucky!
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Izzie
it's d because if you wanna explain to yuor teacher the farther away a star is from earth,, the dimmer the light is im still in school and this is easy stuff lol
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