« previous next »

Author Question: Explain why there would be no volcanoes on Earth without convection. What will be an ideal ... (Read 120 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?

The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.

Did you know?

Despite claims by manufacturers, the supplement known as Ginkgo biloba was shown in a study of more than 3,000 participants to be ineffective in reducing development of dementia and Alzheimer’s disease in older people.

Did you know?

Your skin wrinkles if you stay in the bathtub a long time because the outermost layer of skin (which consists of dead keratin) swells when it absorbs water. It is tightly attached to the skin below it, so it compensates for the increased area by wrinkling. This happens to the hands and feet because they have the thickest layer of dead keratin cells.

Did you know?

Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.

Did you know?

This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.

Comparative sizes of the Earth and the Moon Comparative sizes of the Earth and the Moon
The Tilt of Earth’s Axis The Tilt of Earth’s Axis
Moon and Earth Moon and Earth
Earth’s history spans 4.5 billion years. Geologists and paleontologists have pieced together the his Earth’s history spans 4.5 billion years. Geologists and paleontologists have pieced together the his
Climate Change: Volcanoes Climate Change: Volcanoes
Earth’s tilt and yearly rotation around the sun cause seasonal effects. The 23° tilt of Earth’s ... Earth’s tilt and yearly rotation around the sun cause seasonal effects. The 23° tilt of Earth’s ...
Video: Major Elements in Biological Molecules: Proteins

For a complete list of videos, visit our video library