How does radioactivity make it possible to understand how earth can be so old and still have a hot interior?

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Answer 1

Answer:

Answer:

The reason is that there are radioactive elements that are in the center of the earth.

Explanation:

If the earth were only a rock cooling from the time of its birth. It should have already cooled completely thousands of years ago. However, volcanoes continue to shed hot magma and this is proof that there is a source of heat in the center of the earth. This source of heat is due to the radioactivity of elements such as Uranium and Thorium that were enclosed during the formation of the earth. These elements slowly disintegrate emitting particles that collide with others emanating heat. For example, the half-life of uranium is 4.5 billion years, which means that it decays very slowly.

Answer 2

Answer: I know that we can find how old the Earth is by knowing how much uranium ultimately decayed into lead. Uranium-238 has a very long to decay, about 4.5 billion years. So that is how we are able to understand how old the Earth is.

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In a redox reaction, the substance that accepts electrons is said to be

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The substance doesn't have a specific name. We just say that that substance is being reduced. Remember this mnemonic - OILRIG where "Oxidation is Loss, Reduction is Gain" of electrons.

The scientific method is a process for experimentation that is used to explore observations and answer questions. What is the first step in completing the scientific method? project experimentation B: hypothesis C: problem D: observation

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Answer:

The steps of the scientific method go something like this: Make an observation or observations. Ask questions about the observations and gather information. Form a hypothesis, a tentative description of what's been observed, and make predictions based on that hypothesis

Explanation:

sorta explained up there ^^

Final answer:

The first step in the scientific method is Observation, where scientists describe phenomena in the natural world. Afterwards they ask a question, form a hypothesis, conduct an experiment, and arrive at a conclusion.

Explanation:

The first step in the scientific method process is typically Observation, where scientists notice and describe phenomena that occurs in the natural world. For example, a scientist may observe that a plant does not grow taller in the absence of light. Other steps that follow include forming a question, forming a hypothesis, conducting an experiment, and drawing a conclusionbased on the results of the an experiment.

Learn more about Scientific Method here:

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Which waves have the longest wavelength and lowest energy on the electromagnetic spectrum?a.) X-Rays
b.) infrared
c.) radio
d.) gamma rays

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Which waves have the longest wavelength and lowest energy on the electromagnetic spectrum?
a.) X-Rays b.) infrared c.) radio d.) gamma rays

Answer:

The answer is radio waves

Explanation:

Which element melts at room temperature?

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Bromine and Mercury melt at room temperature!
Also please answer questions properly, and not be rude.

Bromine and Mercury are the elements that melt at room tempature. Hope this helped!

How do machines transfer and convert energy

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Energy transformation or energy conversion is the process of changing one form of energy to another. In physics, the term energy describes the capacity to produce certain changes within a system, without regards to limitations in transformation imposed.

As the ball falls, its energy will decrease and its energy will increase

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Answer: As an object falls its potential energy decreases, while its kinetic energy increases. The decrease in potential energy is exactly equal to the increase in kinetic energy.

Explanation:

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