« previous next »

Author Question: Explain why there would be no volcanoes on Earth without convection. What will be an ideal ... (Read 72 times)

magmichele12

  • Hero Member
  • *****
  • Posts: 559
on: Jul 16, 2018
Explain why there would be no volcanoes on Earth without convection.
 
  What will be an ideal response?

Question 2

Explain the factors that determine whether or not convection occurs.
 
  What will be an ideal response?


cuttiesgirl16

  • Sr. Member
  • ****
  • Posts: 345
Reply #1 on: Jul 16, 2018
Answer to Question 1

The decompression of rising rock lowers its melting point while only lowering its temperature a small amount. The rock is now above its melting point and it begins to melt. Upward movement to cause decompression results from convection.

Answer to Question 2

Viscosity, gravity, and temperature are important controls on convection. Gravity causes the cooler, denser material to sink, whereas viscosity inhibits motion of the mass. Convection is favored by those conditions which overcome viscosity, including large mass, long time, and higher temperatures.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Persons who overdose with cardiac glycosides have a better chance of overall survival if they can survive the first 24 hours after the overdose.

Did you know?

The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.

Did you know?

All patients with hyperparathyroidism will develop osteoporosis. The parathyroid glands maintain blood calcium within the normal range. All patients with this disease will continue to lose calcium from their bones every day, and there is no way to prevent the development of osteoporosis as a result.

Did you know?

Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.

Did you know?

Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.

Solar particles interact with Earth's magnetosphere. Sizes not to scale. Solar particles interact with Earth's magnetosphere. Sizes not to scale.
Earth’s Spheres Earth’s Spheres
Earth’s Revolution and Rotation: The Causes of Earth’s Seasons Earth’s Revolution and Rotation: The Causes of Earth’s Seasons
Obliquity "Tilt of Earth on its axis" Obliquity "Tilt of Earth on its axis"
Types of Volcanoes Types of Volcanoes
Tardigrade wasn't correct, nor was Gastrotricha. What on earth is this asking me. Tardigrade wasn't correct, nor was Gastrotricha. What on earth is this asking me.
Video: Stimulus (introduction)

For a complete list of videos, visit our video library