GEOGRAPHY MIDDLE SCHOOL

What helped scientists understand that Earth's interior is liquid? A) P waves cannot travel through liquids.

B) P and S waves cannot travel through liquids.

C) P and S waves travel through liquids at different speeds.

D) S waves cannot travel through liquids.

Answers

Answer 1
Answer:

The Earth’s interior is composed of several layers: the crust, the mantle and the core. Scientists used waves and their speed to study the Earth's interior. The speed of seismic waves is affected by the properties of the material the waves pass through. The stiffness of material affects the speed of these waves. P-waves, or pressure waves, go through both liquids and solids, while S-waves, or shear waves go through solids but not liquids. The following helped scientists understand that Earth's interior is liquid: S waves cannot travel through liquids. Correct answer: D
Answer 2
Answer: The correct answer is D s waves cannot travel through liquids

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Answers

A permeable rock breaks down quicker than a rock that is not so permeable because there is less space for anything (i.e. water) to get in the not so permeable rock in order to widen the holes and ultimately break the rock. On the other hand, a permeable rock is full of holes and will break down because of the many holes available to widen.

Is Alaska a state or a US territory?

Answers

Alaska is a state that is near Canada.
Alaska Is a State! Not a territory.

What does the Earths troposphere protects us from?

Answers

Troposphere protects us from harmful UV rays from the sun 
The troposphere is the lowest portion of Earth's atmosphere. It contains approximately 80% of the atmosphere's mass and 99% of its water vapour and aerosols. It also protects us from the rays of the sun

Name all the biomes in Pakistan.

Answers

Answer:

Tropical and subtropical coniferous forests

Indus River Delta-Arabian Sea mangroves Mangrove

Indus Valley desert Deserts and xeric shrublands

Karakoram-West Tibetan Plateau alpine steppe Montane grasslands and shrublands

Explanation:

Answer:

Tropical and subtropical coniferous forests

Mangrove

Deserts and xeric shrublands

Montane grasslands and shrublands

Explanation:

There are WAYYYYYY more though

Which of the following statements about the United States government is true?A. The United States has a presidential system with two branches of parliament.
B. The United States has a parliamentary system that holds general elections every four years.
C. The United States has a cabinet system that advises the prime minister on national issues.
tes has a federal government that handles national affairs and states that have their
own governments.

Answers

Answer:

The answer is Option D. The United States has a federal government that handles national affairs and states that have their own governments.

Explanation:

The United States has a presidential government system, whereas other countries like England have a parliamentary system. In a presidential system, the people choose the executive leader (the President) directly. In a parliamentary system, people vote for the party and technically it is the legislators who are a member of that party who chose their leader.  So, in a parliamentary system voters do not select the leader directly like in a presidential system.  The United States is also a federal system where power is shared in the national system and the individual states.  

Answer:

D

Explanation:

got a 100 %

The Colorado River carved out a deep canyon in the habitat of an Abert’s squirrel population. This is an example of which stage of speciation?

Answers


The populations become completely separated from one another

Answer:

The populations become totally separate.

Explanation:

i just took the K12 test and it was this answer.
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