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4 years ago

Alfred wegener suggested that earths continents are moving. Which evidence support this theory

Chemistry

2 answers:

Vlad [161]4 years ago

4 0

<h2>Answer:</h2>

Close geometric correspondence of continental coastlines.

<h2>Explanation:</h2>

The main supporting clues that Wegener used were the geomorphological shape of the opposing continents across the Atlantic. Further evidence derived from the study of the continental shelf below the sea; the matching geometry is even better than the one of the emerged shoreline.
Another strong supporting evidence is the presence of rocks of identical geological origin on different continents. It is actually possible to follow the strata limits on landmasses that now are separated by oceans. It is a strong clue that once these masses belonged to the same continent.

Lisa [10]4 years ago

4 0

Answer:

As explained below

Explanation:

Alfred Wegener was the first to give the continental plate theory in 1912 and IT gained popularity in 1950 onwards when the publication came from the geologist and other scientists that proved that continent are spreading and as seafloor is itself moving and the evidence that he gave doe the theory are given as below.

1. Drifting away from the continents due to the pole wandering forces.

2. Jigsaw ft puzzle that coasts of South America and those of Africa have the same geologic and tectonic origin.

3. Presence of large and long mountain chains of mountains and ranges present in all the contents that form a chain.

4. Floral and Faunal evidence found in the lands of South America and Africa and the opening of the s-shaped Atlantic ocean that separated them apart.

5. Presence of similar climatic zones over the continents of the Gondwanaland and the northern Laurentia continent.

The seafloor spreading supports the evidence by the study of paleomagnetism and the age of rocks.

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A change in which property of light will have no effect on whether or not the photoelectric effect occurs??? Frequently energy i

slavikrds [6]

Intensity has no affect on whether or not the photoelectric effect occurs. The determining property is frequency and since frequency and wavelength are inversely proportional, wavelength matters as well. If a frequency of light can't cause the photoelectric effect to happen, no matter what the intensity is, the light can't make it happen.

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5 0

3 years ago

Read 2 more answers

100.0 mL of 3.8M NaCN, the minimum lethal concentration of sodium cyanide in blood serum

9966 [12]

The given question is incomplete. The complete question is:

Calculate the number of moles and the mass of the solute in each of the following solution: 100.0 mL of 3.8 × 10−5 M NaCN, the minimum lethal concentration of sodium cyanide in blood serum

Answer: The number of moles and the mass of the solute are $0.38\times 10^{-5}$ and $18.62\times 10^{-5}g$ respectively

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution.

$Molarity=\frac{n\times 1000}{V_s}$

where,

n = moles of solute

$V_s$ = volume of solution in ml

$3.8\times 10^{-5}M=\frac{n\times 1000}{100.0}$

$n=0.38\times 10^{-5}$

n = moles of $NaCN$ = $\frac{\text {given mass}}{\text {Molar mass}}$

$0.38\times 10^{-5}=\frac{x}{49g/mol}$

$x=18.62\times 10^{-5}g$

Thus the number of moles and the mass of the solute are $0.38\times 10^{-5}$ and $18.62\times 10^{-5}g$ respectively

6 0

3 years ago

Given the incomplete equation representing a reaction:

sergey [27]

Answer : The formula of the missing product is, $OH^_$

Explanation :

The given incomplete equation representing a reaction,

$2Na(s)+2H_2O(l)\rightarrow 2Na^+(aq)+2__(aq)+H_2(g)$

When the sodium metal react with the water then it gives a colorless solution of sodium hydroxide and hydrogen gas. In the solution, sodium hydroxide is present in the form of ions i.e, $Na^+$ and $OH^-$ ions.