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3 years ago

Which factor activates a convection current, starting the flow of a fluid?

Biology

2 answers:

Levart [38]3 years ago

6 0

Answer:

temperatures differences in the mantle

Explanation:

It's the temperature differences in the mantle. Warmer magma near the core rises because it becomes less dense. It reaches the surface, pushes against the tectonic plates, then cools and falls back down to be replaced by new warm magma.

These happens in volcanic eruption and leads to the formation of volcanic rocks.

Eddi Din [679]3 years ago

4 0

Answer:

The factor that activates convection is the mass

Explanation:

Convection is a mechanism of heat transfer (there are also the phenomena of conduction and radiation), produced by the displacement of mass through the fluid. Example: when heating water in a saucepan, contact with this solid surface produces circulation due to the gradient of temperatures that occur in the fluid in question, in this case the water.

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In a lab about the activity series, a solution of copper(II)chloride is placed in a test tube with zinc metal. If zinc is higher

Tcecarenko [31]

Answer:

Option D, Zinc is higher on the activity series because there is clear evidence of a reaction.

Explanation:

It is very clear that a metal which is higher in activity will replace a metal having lower activity.

Since, Zinc has higher activity than copper, it is very sure that it in a copper chloride solution it will replace copper and produce zinc chloride solution leaving behind copper as residue.

Residues of copper is a clear evidence of reaction

The chemical equation for this reaction would be -

$CuCl_2 + 2Zn^+ -----> 2ZnCl + Cu^{2+}$

Hence, option D is correct

5 0

3 years ago

3. A house has several systems, such as the electrical system, plumbing system, and

lapo4ka [179]

Answer: The systems regulate the house, the same way our body system helps regulate our body. If it wasn’t for the electrical system, plumbing system, heating, and cooling system the house wouldn’t be regulated or able to live in. Just like if our bodies isn’t being regulated, we can't live.

I hope this could help you! ^^

3 0

3 years ago

Which method of weight training can be used to develop muscular strength?

andreyandreev [35.5K]

I believe the answer to your question is isokinetic, isometric, and isotonic

3 0

3 years ago

Which organism has the least differences in the number of amino acids in cytochrome c compared to

Evgesh-ka [11]

Answer:

Using the number of amino acid differences, it would appear that the two birds are more closely related (had a common ancestor very recently), while the two fungi would have to trace their common ancestry much farther back in time (much more distantly related).

5 0

3 years ago

What is the mass of all the worker bees in the hive together? Write your answer in scientific notation.

Lisa [10]

Answer:

4 × 10^0 kg or 4×E0 kg.

Explanation:

Before delving into or solving the Calculation, let us check one or two things about worker bees.

WHAT IS A WORKER BEE?.

Bees generally are social insects living in an organized community and they consist of three castes which include; the drone bees, worker bees, and the queen bees.

The queen bees are the female bees while the drone bees are the male bees.

The WORKER BEES are female bees too, but the only difference between them and the queen bees is that they (worker bees) do not reproduce like the queen bees. They are saddled with the responsibility of looking for food and maintaining the hive temperature.

Now to the question, the mass of a bee= 1 × 10^-4 kg. And there are 4 × 10^4 bees in hive. Therefore, the mass of all the worker bees in the hive together = (1 × 10^-4) × (4×10^4).

==> 4 × 10^0 kg, or 4E0 kg.

8 0

3 years ago