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morpeh [17]
3 years ago
14

The theory of plate tectonics was, at first, rejected by most scientists. Now most geologists accept that tectonic plates exist

and that these tectonic plates can and do move. What is responsible for the change in how scientists think about plate tectonics?
Chemistry
2 answers:
netineya [11]3 years ago
8 0

Answer:

The validation of seafloor spreading in the 1950s and 60s

Alenkasestr [34]3 years ago
4 0

Answer:

The validation of seafloor spreading in the 1950s and 60s

Explanation:

The theory of seafloor spreading was supported by numerous evidence including thermal probes that showed that heat flow over the mid-ocean ridges measured up to four times those measured in general bottom sediments, which are taken as due to the presence of molten Earth material close to the ridge crest

The ridge crest also show signs unusually seismic wave velocities that are considered to be due to microfracturing and thermal expansion from upwelling magma

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Choose your favorite super hero that gained their powers from radiation. What
dmitriy555 [2]

Answer:

Copy and paste "Electromagnetic waves are categorized according to their frequency f or, equivalently, according to their wavelength λ = c/f.  Visible light has a wavelength range from ~400 nm to ~700 nm.  Violet light has a wavelength of ~400 nm, and a frequency of ~7.5*1014 Hz.  Red light has a wavelength of ~700 nm, and a frequency of ~4.3*1014 Hz." into google, and the correct website pops up as the first result.

Explanation:

I tried to link the website that I use to convert wavelengths and frequencies into types of light, but it deleted my answer, so I guess we're doing it this way. As for converting the wavelength to energy, the same principles apply as before:

Frequency: ν       Wavelength: λ       Energy: E       Speed of light: C (3.00e8)       Planck's Constant: h (6.626e-34)

ν -> λ    λ = C/ν

λ -> ν    ν = C/λ

For either of these equations, wavelength must be converted to meters or nanometers, depending on the equation.

For ν -> λ, after doing the equation, convert the wavelength into nanometers by dividing by 1e-9.

For converting λ -> ν, convert the wavelength into meters by multiplying by 1e-9.

For energy: E = hν = hc/λ

6 0
3 years ago
What acid has a dissociation constant of 4.57x10^-3
Artyom0805 [142]
The acid Ka (Gallic )
6 0
4 years ago
Nucleotides have a phosphate group attached at the ___ carbon atom of the sugar.
Tanzania [10]

Answer:

Nucleotides have a phosphate group attached at the 5' carbon atom of the sugar.

Explanation:

Phosphate group is attached to the sugar molecule in the place of -OH.

6 0
3 years ago
Imagine that you are a drop of water in the ocean. Describe a journey through the water cycle. Explain what causes you to change
Scorpion4ik [409]

<em>I am going to use first-person pronouns for this drop of water</em>

[ Start ] Liquid

     I start out as a drop of water among other drops of water in the ocean. I am currently a liquid as I can change shape easily but I do not float up.

[ Middle ] Gas

     The sun feels very hot. From the heat I turn into a gas, specifically water vapor, and float up into the sky.

[ Middle x 2 ] Solid

     In the sky I meet up with a lot of my past friends. We form a cloud, and as we grow heavier (the more the merrier) we start to fall down. It is extremely cold now, so we fall down as a solid, also known as hail or snow.

[ End ] Liquid

     We hit the ocean again as we fall from the sky. I'm so happy to be back home as a water drop again!

Have a nice day! - <u>Please note this is very simplified</u>

     I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)

- Heather

5 0
3 years ago
A potassium chloride solution that also contains 5% (m/V) dextrose is administered intravenously to treat some forms of malnutri
alexgriva [62]

ci=oncentration of pottasium = 3.5 * 10^-2 mol/litre

3 0
3 years ago
Read 2 more answers
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