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3 years ago

How does seafloor spreading occur?

Geography

1 answer:

mrs_skeptik [129]3 years ago

3 0

Answer:

E. By the release of magma

Explanation:

When the magma leaves the underwater vents, it hardens and spreads making the seafloor bigger.

Have a good day!

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To distinguish between properties of the two major types of supernovae: massive star supernovae and white dwarf supernovae. All

Over [174]

Answer: Massive star supernovae

2. Can only occur in a galaxy with ongoing star formation.

3. Black hole or neutron star left behind.

White dwarf supernovae

1. Star explodes completely, leaving no compact object behind.

4. Can only occur in a binary system.

5. Can occur in a very old star cluster.

6. Spectra always lack strong hydrogen lines.

7. Has a brighter peak luminosity.

Explanation: A supernova is a bright explosion of a star as it dies off. Supernova can occur due to the star losing the heat at its core which eventually makes it collapse. This is the type of supernova formed when massive stars die. They occur in a galaxy with ongoing star formation and a black hole or neutron star left behind.

Supernovae can also be occur when a star orbits another and crashes into another. This is what occurs in a white dwarf . This is part of a binary system, can occur in a very old star cluster and leaves no compact object behind.

3 0

3 years ago

In which region are the Rocky Mountains located? a East b Northwest c Southeast d West.

ozzi

Answer:

West

Explanation:

It's on the western side of North America

3 0

3 years ago

Read 2 more answers

Days when the Earth’s poles are tilted at the greatest angle away from or toward the Sun are called __________

viva [34]

Summer or winter solstice

4 0

3 years ago

A narrow deep inlet of the sea between high rocky cliffs.

agasfer [191]

I think it’s plateau

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3 years ago

On your most recent mountain climbing adventure, you recorded a barometric pressure of 1000 mb at the base of a mountain. When y

Lera25 [3.4K]

Answer:

B) 5000 meters

Explanation:

Barometric pressure depends on the height, as of course there is more air above an area as the air column is higher. Usually, it is defined as a exponential relation which comes as follows:

1. $P=P_{0}*e^{(\alpha*h) }$

Being:

P the pressure at the determined height. In our case, would be the 950 mb at the summit

$P_{0}$ the initial pressure. In our case, would be the 1000 mb at the base.

α a constant value, which is usually found on literature as $-1.19*10^{-5} m^{-1}$ . It depends on the air density and the estimations on how much air do we have above.

h is the height which we want to determine the pressure at

Of course, we need to clear the height on the previous equation, so we need to seek help on the natural logarythm. First of all, let's clear the exponential expression from 1 :

2. $\frac{P}{P_{0}}=e^{\alpha*h}$

After that, apply the natural logarythm at both sides of the equation 2:

3. $ln(\frac{P}{P_{0}})=ln(e^{\alpha *h})$

Computing 3:

4. $ln(\frac{P}{P_{0}})=\alpha*h$

And clearing h in 4:

5. $\frac{ln\frac{P}{P_{0}} }{\alpha } =h$

Replacing known values in 5. Please have in mind, when replacing, both of the pressure values need to be in the same unit (in this case, millibars)

$h=\frac{ln\frac{950 mb}{1000 mb} }{-1,19*10^{-5} m^{-1}}=4310,36 m$

As this is an estimate, we would say that mountain is approximately 5000 m. Quite far from the result, maybe the source has different α constant values.

3 0

3 years ago