Questions

Biology

1 answer:

Marat540 [252]3 years ago

4 0

The decay of uranium isotopes is used to provide information about the age of Earth.

<h3>Explanation:</h3>

Isotopes of Uranium U-232, U-233 , U-234 , U-235 , U-236 , U-238 are used as fuel in nuclear reactors or as explosives for nuclear weapons. Uranium 238 is not very radioactive and it constitutes for nearly 99.3% of natural uranium on Earth and has the longest lifetime: its period is 4.5 billion years, about the age of Earth.

Use of radiometric dating techniques help in defining the age of substances (natural or man-made) using the known decay rates of radioactive elements. Each element has an individual decay rate and half life time.

Two Uranium isotopes (U-238 and U-235) are used for radiometric dating. Both the isotopes have different decay rates and half life period. Both are unstable and radioactive. Since two different isotopes produce two different decay clocks (one as a reference to other), it is beneficial in accurately determining the age of samples. The age of earth (rocks or other natural elements) can be easily determined using Uranium isotopes.

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What are some characteristics of scientific thinking?

Fynjy0 [20]

Answer:

Open-mindedness. Capable of accepting new and different ideas.

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curiosity. leads to new scientific knowledge.

creativity. involves coming up with new sources and ways to solve problems or produce things.

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2 years ago

Sound waves travel through gas liquid and solids A) True B) False

Novay_Z [31]

Answer:

True.

Explanation:

Sound is a form of Energy that produces a sensation of hearing in our ears.
Sound is produced as a result of vibration produced in a body.
Sound energy is transmitted from one place o other place by wave motion.
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Sound cannot travel in vacuum.
It requires a medium to travel from one point to another.
A sound can travel in all medium, solids, liquids and gases as all of these have particles.
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4 0

3 years ago

Only about ______ of water is fresh and suitable for human use.

Anastaziya [24]

<span>Only about 75% of water is fresh and suitable for human use.

Hope I helped ^_^

Please hit dat "THANKS" button!</span>

5 0

3 years ago

This is an anion: ?

tatuchka [14]

Answer:

Is this an anion

Explanation:

yes

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3 years ago

Why is it important to study the origin of life on Earth?

Eddi Din [679]

Answer: Earth will always be the most accessible habitable planet for study. Consequently, studying the origin and earliest evolution of life, along with the long-term evolution of the Earth's environments, helps us understand why the Earth became habitable and why terrestrial life has persisted for billions of years.

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3 years ago