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3 years ago

As the geology officer on an expedition to a newly discovered, Earthlike

Geography

2 answers:

Anettt [7]3 years ago

8 0

Answer:

Surface expression.

Explanation:

The most effective way to determine if a planet experiences plate tectonics is to look for the telltale signs found on Earth. Several of the features that could be searched for are:

Mid-ocean ridges
Rings of volcanism
Deep linear trenches in the oceans.

A satellite topography scan of the planet would reveal the shapes of the mountain ranges and valleys on the planet. If these tend to be lineal and covering significant parts of the planet, then plate tectonics likely occur.

eimsori [14]3 years ago

5 0

The correct answer to this open question is the following.

The best indication that the planet may have plate tectonics could be, in the first place, if the planet has a magnetic grid. We can check if the surface of the planet is stable and has mountain ranges, valleys, and faults. If that is the case, then the planet has telluric movements and movement of the plates.

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How would the U.S back then be if there were no slaves?

IgorC [24]

Answer:

they probably would have been in property because most US citizens at the time made money by selling slaves or making their slaves dance and tell Fortunes in order to make money

3 0

3 years ago

Calculate the amount, in grams, of an original 300-gram sample of radioactive isotope Potassium-40 remaining after

Aleksandr [31]

Answer:

The current amount of the Potassium-40 sample is approximately 37.521 grams.

Explanation:

The amount of the sample of the radioactive isotope decays exponentially in time, the amount of mass of the sample as a function of time ( $m (t)$ ), in grams, is described below:

$m(t) = m_{o}\cdot e^{-\frac{t}{\tau} }$ (1)

Where:

$m_{o}$ - Initial mass, in grams.

$t$ - Time, in years.

$\tau$ - Time constant, in years.

The time constant can be found from half life ( $t_{1/2}$ ), in years, described in statement:

$\tau = \frac{t_{1/2}}{\ln 2}$ (2)

If we know that $m_{o} = 300\,g$ , $t = 3.9\times 10^{9}\,yr$ and $t_{1/2} = 1.3\times 10^{9}\,yr$ , then the current amount of the sample is:

$\tau = \frac{1.3\times 10^{9}\,yr}{\ln 2}$

$\tau \approx 1.876\times 10^{9}\,yr$

$m = (300\,g)\cdot e^{-\frac{3.9\times 10^{9}\,yr}{1.876\times 10^{9}\,yr} }$

$m\approx 37.521\,g$

The current amount of the Potassium-40 sample is approximately 37.521 grams.

4 0

3 years ago

A major objective of the South Pacific Forum founded in 1971 was

NeX [460]

A. expanding the copra trade.

3 0

3 years ago

Newton used prisms to?

galina1969 [7]

Answer: B. Show that light was composed of different colored rays

Explanation:

In the eighteenth century Isaac Newton found out that when a beam of light from the Sun, passes trhough a prism is decomposed in many different colors. He named this phenomenom as dispersion of light.

This phenomenom occurs when a beam of white light (which is compound of many wavelengths or "colors") is refracted (the different rays of light are diverted depending on their wavelengths) in some medium, leaving their constituent colors separated.

3 0

3 years ago

Read 2 more answers

I NEED THIS NO LATER THAN 11:59 PM PLEASE 30 POINTS!!!

sineoko [7]

Answer:

Explanation:

As elevation increases, temperature decreases.

Graph should be start a line at a steady decrease starting in the top left corner and going down to the low right corner. X axis is temp, height is Y axis.

8 0

3 years ago