All categories

3 years ago

how scientist use the measurement of seismic waves across the earth to determine the make-up of the earth's interior

Chemistry

1 answer:

masha68 [24]3 years ago

6 0

The two main types of seismic waves are body waves and surface waves. Body waves are broken down into P waves (primary waves) and S waves (secondary waves).

P waves are the fastest and can move through solid rock and liquids. These waves are longitudinal waves.

S waves are slower and can only move through solid rock. These waves are transverse waves.

Scientists used P waves and S waves to determine that part of the core of the earth is liquid. When an earthquake happened, both waves could be detected near the earthquake center, but only P waves (which travel through solids and liquids) could be detected on the other side of the earth. That meant the S waves could not move through the liquid outer portion of the earth's core, while the P waves could.

You might be interested in

What is the function of alloying elements (e.g., cr, v, w, and mo) in tool steels?

trasher [3.6K]

Answer:

An alloy is the combination of metals homogeneously.

Explanation:

Alloys can also include other elements in combination with metals e.g carbon and Iron forms steel.

Alloys find a host of application in various industries and domestic use.

Alloying of metals helps to improve the physical and chemical properties of such materials better.

Some materials are alloyed to improve their strength.

Alloying can help heat and electrical conduction of a substance.

Alloys can greatly prevent rusting and produce corrosion resistant metals.

Alloys can provide a better means for a material to be worked.

Alloys can be more durable than original materials.

8 0

4 years ago

The substrate is the same in parts a and b, however the mechanism that proceeds is different. Explain how the choice of solvent

GenaCL600 [577]

Answer:

See explanation

Explanation:

The reaction of a benzyl bromide with a nucleophile may proceed by SN1 or SN2 mechanism depending on the nature of the solvent used.

Since SN1 reaction involves the formation of a carbocation, it usually predominates in the presence of a poor nucleophiles and protic solvents. Hence when methanol is used as solvent and a poor nucleophile is used, SN1 mechanism predominates.

However, when acetone which is an aprotic solvent is used in the presence of a good nucleophile, SN2 reaction mechanism predominates.

3 0

3 years ago

Distillation is a _____________ separation technique.

Annette [7]

Answer:

physical

Explanation:

5 0

3 years ago

Read 2 more answers

Brainliest if answered in the next 5m

Nina [5.8K]

The products are favored over the reactants

5 0

3 years ago

Read 2 more answers

Identify the process in which the entropy increases. Identify the process in which the entropy increases. the phase transition f

diamong [38]

Answer:

The phase transition from a solid to a gas.

Explanation:

Entropy is related to the moles of gases available. The more gaseous moles, the higher the entropy.

Identify the process in which the entropy increases.

the phase transition from a solid to a gas. YES. There are more gaseous moles available so entropy increases.
a decrease in the number of moles of a gas during a chemical reaction. NO. This causes a decrease in entropy.
the phase transition from a liquid to a solid. NO. There is almost no change in the entropy in this process.
the phase transition from a gas to a liquid. NO. There is a decrease in entropy in this process.
the phase transition from a gas to a solid. NO. There is a decrease in entropy in this process.

7 0

4 years ago