Question: Which statement best explains why Earth’s outer core is in liquid form?
The iron-nickel alloy melts due to hot temperatures.
The outer core has a tarry consistency.
This region is less dense when compared to the mantle.
This region is under extreme pressure from the weight of other layers.
Answer:
The statement here that bet describes the Earth's outer core is in liquid form " The iron-nickel alloy melts due to hot temperatures."
Explanation:
The outer core of the Earth's is made up of fluid layer which is about 2400 km thick and basically made from iron as well as nickel alloy. This layer lies just above the solid inner core and below it mantle is present. The core of the Earth works like a furnace for the whole composition. It holds the intense heat as well as pressure that helps is maintaining the iron and nickel in the molten state.
If you could dig a tunnel right through the Earth you could theoretically free-fall to the centre of our planet in just eighteen minutes. You can’t, of course: such a tunnel would have to tolerate temperatures as high as the surface of the Sun and pressures three and a half million times greater than those at the Earth’s surface.
Salutations!
Describe the difference between revolution and a rotation, explain why each is important.
Revolution - Revolution is when the Earth revolves around the sun. This process takes 365 days/ 1 year.
Rotation - Rotation and revolution are both different. Rotation is when Earth is spinning on its own axis and also revolving around the sun. Rotation gives us day and night.
Why are they important?
Rotations gives us day and night which is 24 hours. Revolution gives us season. Earth's spins controls our live. We sleep at night and are awake in the days. Both of the spins are very vital to us.
Hope I helped (:
Have a great day!
The answer is True.
Many people doubt it because it's just sound too fictional.
Ring of fire located in the basin of pacific ocean, a large number of earthquake and volcano eruptions happen here.
The island arc is a string of islands formed by volcanoes along deep ocean trench.
Hope it helps
Answer:
Age is a problem for both types of countries, here's why
Explanation:
In developing countries age is a problem because this state has to provide jobs and care for growing children, and providing education for them is expensive and time consuming, not to mention basic needs like housing and food. It's hard for developed countries too because these countries have to deal with an older population that is declining in health. The state needs to provide assisted living and care for this part of the population.
