This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: ________ occur about 130 km above Earth's surface near the polar regions when energy in the solar ... (Read 171 times)

Zulu123

  • Hero Member
  • *****
  • Posts: 525
on: Jul 27, 2018
________ occur about 130 km above Earth's surface near the polar regions when energy in the solar wind guided by Earth's magnetic field excites gases in the upper atmosphere.
 
  a. Coronas
  b. Flares
  c. Auroras
  d. Coronal holes
  e. Nuclear fission

Question 2

Saturn is on average 10 AU from the Sun. What is the approximate orbital period of Saturn?
 
  a. 10 years
  b. 32 years
  c. 100 years
  d. 1000 years
  e. 1,000,000 years


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

beccamahon

  • Sr. Member
  • ****
  • Posts: 338
Reply #1 on: Jul 27, 2018
Answer to Question 1

c

Answer to Question 2

b


Zulu123

  • Member
  • Posts: 525
Reply 2 on: Jul 27, 2018
:D TYSM

Chelseyj.hasty

  • Member
  • Posts: 319
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.

Did you know?

When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

Did you know?

Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.

Did you know?

The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.

Did you know?

Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.

Leaf surface features. Leaf surface features.
Surface Tension Surface Tension
Mira as seen from the Earth Mira as seen from the Earth
Hematoma. A hematoma around the right eye caused by an injury. A hematoma is the result of bleeding Hematoma. A hematoma around the right eye caused by an injury. A hematoma is the result of bleeding
Comparative sizes of the Earth and the Moon Comparative sizes of the Earth and the Moon
The Three Components of Energy Needs The Three Components of Energy Needs
Video: Energy Flow - Trophic Levels and Food

For a complete list of videos, visit our video library