I am doing a project for trig on cyclic things such as sunrises and sunsets. One of the questions asked why the sunrises and sunsets are cyclic and it would be great if u guys knew! Help!!!! thanks
The earth is rotating around an axis a a constant duration, but since this axis is tilted and rotating around the sun, then the depending on where the earths orbit is around the sun, and the relation of the earth's tilt in relation to the sun (ie is it winter or summer) will regulate the what time the sun comes up and goes down every day in the calender.
If that is too hard to understand, I would get a farmers almanac that tells the times for sunrise and sunset for every day of the year. The phases of the moon is also cyclic as well.
because the earth is turning at a steady rate
Thursday, April 9, 2009
In acid rain, the mobility of heavy metals in the soil profile increases/decreases/ does not change. WHY?
I'm confused... I think I know the answer yet again I'm not sure... so if someone could help me I'd appreciate it a lot! Thanks!!
P.S: Right answer will be voted as best answer!!
it increases because heavy metals are diluted in water so they can flow from place to place instead of just laying in the dirt.
P.S: Right answer will be voted as best answer!!
it increases because heavy metals are diluted in water so they can flow from place to place instead of just laying in the dirt.
When I think of an aquifer I think of the water that is in it. However, what do these two resources refer to?
When I think of an aquifer I think of the water that is in it. However, what do these two resources refer to the aquifer as?
groundwater reservoirs and lakes.
groundwater reservoirs and lakes.
What kinds of soils and ground material frequently form an aquifer?
What kinds of soils and ground material frequently form an aquifer?
What is recharge?
What are ways in which water is removed or escapes from an aquifer?
Why would we want to know where recharge areas are and map them?
(and dont say "do your own homework", im a grown man with an old textbook who wants answers for my own knowledge.)
non permeable and semipermeable
when the aquifer fills up after being depleated.
threw permeable rock, water wells.
so you could have a reliable source of water.
What is recharge?
What are ways in which water is removed or escapes from an aquifer?
Why would we want to know where recharge areas are and map them?
(and dont say "do your own homework", im a grown man with an old textbook who wants answers for my own knowledge.)
non permeable and semipermeable
when the aquifer fills up after being depleated.
threw permeable rock, water wells.
so you could have a reliable source of water.
What determines how much water an aquifer can hold?
What determines how much water an aquifer can hold?
what the surrounding bedrock is composed of.
The amount of empty space in the rock that contains the aquifer. This can be either through porosity of the rock/soil, compaction of the rock/soil, or fractures and joints in the rock/soil. The more empty space there is in a rock, the more water can fill it.
The surrounding bedrock.
what the surrounding bedrock is composed of.
The amount of empty space in the rock that contains the aquifer. This can be either through porosity of the rock/soil, compaction of the rock/soil, or fractures and joints in the rock/soil. The more empty space there is in a rock, the more water can fill it.
The surrounding bedrock.
If you dug a hole through the center of the earth,and jumped in?
Would you float in the middle or something?
yes you would.
ignoring the temperature, and the problems trying to keep the walls from falling in, and scraping the heck out of your hide, as you whizzed down the tube, of course.
you'd probably yoyo back and forth for a while, and the gravity that holds you in the center would be fairly weak, so you'd be able to climb many miles up the tunnel before you'd feel much trying to draw you back to the center.
let's assume you could dig such a hole and decided to jump in. Actually, you would also want to assume you dropped in and make a number of other very technical assumptions to ensure you did not strike the sides of the hole as you fell down.
Now, you are falling inside this imagined hole through the center of the earth and are wondering what happens next. It turns out, the gravitational acceleration you experience will keep you oscillating from one side of the planet to the other forever. More assumptions are needed. This time you must also assume there is no resistance to your falling due to either air or any other phenomena that may characterize the hole you are falling through.
Why would you oscillate from one side of the planet to the other? Because the gravitational acceleration you experience will vary from one 'g' to zero 'g' and back to one 'g'. One 'g' at the surface of the planet from which you first drop into the hole and that is one 'g' of acceleration toward the center of the planet, zero 'g' at the instant you pass through the center of the planet, and one 'g' of acceleration back toward the center of the planet as you reach the surface on the opposite side of the planet.
You would burn in a firery death from being in a 100,000 degree(c) core.
THE DUD
Edit: its kind of hard to tell seeing that nothing can make it past the mantle. But gravity wise, no one knows for sure.
THE DUD (again)
yes assuming you somehow could keep the hole from caving in and also stay alive and get air etc etc
You would burn and die immediately.
Sorry, I should have said it nicer. But that's the truth.
you will be on flat land or if you dug it completely i don't think you will float but sink through the hole.
uh. you'd burn up. :( so don't try it.
yes you would.
ignoring the temperature, and the problems trying to keep the walls from falling in, and scraping the heck out of your hide, as you whizzed down the tube, of course.
you'd probably yoyo back and forth for a while, and the gravity that holds you in the center would be fairly weak, so you'd be able to climb many miles up the tunnel before you'd feel much trying to draw you back to the center.
let's assume you could dig such a hole and decided to jump in. Actually, you would also want to assume you dropped in and make a number of other very technical assumptions to ensure you did not strike the sides of the hole as you fell down.
Now, you are falling inside this imagined hole through the center of the earth and are wondering what happens next. It turns out, the gravitational acceleration you experience will keep you oscillating from one side of the planet to the other forever. More assumptions are needed. This time you must also assume there is no resistance to your falling due to either air or any other phenomena that may characterize the hole you are falling through.
Why would you oscillate from one side of the planet to the other? Because the gravitational acceleration you experience will vary from one 'g' to zero 'g' and back to one 'g'. One 'g' at the surface of the planet from which you first drop into the hole and that is one 'g' of acceleration toward the center of the planet, zero 'g' at the instant you pass through the center of the planet, and one 'g' of acceleration back toward the center of the planet as you reach the surface on the opposite side of the planet.
You would burn in a firery death from being in a 100,000 degree(c) core.
THE DUD
Edit: its kind of hard to tell seeing that nothing can make it past the mantle. But gravity wise, no one knows for sure.
THE DUD (again)
yes assuming you somehow could keep the hole from caving in and also stay alive and get air etc etc
You would burn and die immediately.
Sorry, I should have said it nicer. But that's the truth.
you will be on flat land or if you dug it completely i don't think you will float but sink through the hole.
uh. you'd burn up. :( so don't try it.
Which of these most likely explains why life on Earth continued following these catastrophes?
Earth has undergone some catastrophic changes from time to time. Which of these most likely explains why life on Earth continued following these catastrophes?
A. Dominant species had a slow mutation rate
B. Many species filled the same niche
C. A strong species had many different characteristics
D. A wide diversity of species existed
thanks
D. The more diversity, the greater the chance that something will survive.
A. Dominant species had a slow mutation rate
B. Many species filled the same niche
C. A strong species had many different characteristics
D. A wide diversity of species existed
thanks
D. The more diversity, the greater the chance that something will survive.
Subscribe to:
Posts (Atom)