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schepotkina [342]
3 years ago
13

Early scientific attempts at determining Earth's age gave a number that was ______. Multiple choice question.

Geography
1 answer:
liubo4ka [24]3 years ago
8 0

Early scientific attempts st determining Earth's age gave a number that was around 4.6 billion years old.

<h3>Radiometric dating methods</h3>

The age of rocks can be most determined by radiometric dating.

This process of radiometric dating makes use of two different isotopes of a sample.

It is known that Radioactive isotopes break down within a known amount of time and this enables geologists to determine the age of a sample with the aid of equipment like thermal ionization mass spectrometer.

Learn more about Radiometric dating at

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Brunei is located on the island of __________.
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Brunei is loacted on the island of Borneo
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3 years ago
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What island country is off the east coast of africa?
arsen [322]

Answer:

Madagascar

Explanation:

The largest number of islands of Africa are found in the Indian Ocean, with the sovereign island nations of Comoros, Seychelles, Mauritius and Madagascar located off the southeastern seaboard of Africa being the most notable.

4 0
4 years ago
Which of the following is/are used to classify a star based on its temperature and luminosity?
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Answer:

D. Hertzsprung-Russell Diagram

Explanation:

The Hertzspring-Russel Diagram or HR-Diagram is used to study the evolution of stars. It plots stars depending on the temperature against luminosity. Stars go through different changes depending on its mass at the beginning. These changes occurs in stages and each stage is marked by a change in temperature and luminosity.

6 0
4 years ago
Geography what land form is created when glaciers erode backwards into the mountainside and form a shape like a shallow bowl?
s2008m [1.1K]

Answer:   Cirques

Explanation:

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5 0
3 years ago
A circle has a diameter
torisob [31]

The circumference of circle is 20.096 units

<em><u>Solution:</u></em>

Given that circle has a diameter  with endpoints at (10, 8)  and (5, 4)

To get the diameter, find the distance between the end points

<em><u>The distance between two points is given by formula;</u></em>

d=\sqrt{\left(x_{2}-x_{1}\right)^{2}+\left(y_{2}-y_{1}\right)^{2}}

Here the points are (10, 8)  and (5, 4)

(x_1, y_1) = (10, 8)\\\\(x_2, y_2) = (5, 4)

Substituting the values we get,

\begin{aligned}&d=\sqrt{(5-10)^{2}+(4-8)^{2}}\\\\&d=\sqrt{(-5)^{2}+(-4)^{2}}=\sqrt{25+16}=\sqrt{41}\end{aligned}

d = \sqrt{41} = 6.4

Thus the diameter is 6.4 units

<em><u>The  circumference of the circle is given by formula:</u></em>

c = \pi d

Where "d" is the diameter of circle

c = 3.14 \times 6.4 = 20.096

Thus circumference of circle is 20.096 units

4 0
3 years ago
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