« previous next »

Author Question: Briefly explain how the Hawaiian Island chain formed. The definitions of hot spot and mantle plume ... (Read 71 times)

michelleunicorn

  • Hero Member
  • *****
  • Posts: 565
on: Jul 13, 2018
Briefly explain how the Hawaiian Island chain formed. The definitions of hot spot and mantle plume should be included in your explanation.

Question 2

Suppose an isotope has a half-life of 50 million years, and 1/8 of the sample remaining consists of that isotope. What is the age of the rock from which it was taken?
 A)150 million years
 B)300 million years
 C)400 million years
 D)600 million years
 E)800 million years


jesse.fleming

  • Sr. Member
  • ****
  • Posts: 301
Reply #1 on: Jul 13, 2018
Answer to Question 1

The Hawaiian Island chain formed as the Pacific plate traveled over a hot spot on the Earth's surface created by a mantle plume. A hot spot is a location on Earth's surface where a stationary column of magma, originating deep within the mantle--a mantle plume, has slowly risen to the surface and formed a volcano. Because the mantle plumes apparently remain stationary within the mantle while the plates move over them, the resulting hot spots leave a trail of extinct and progressively older volcanoes. This trail of extinct volcanoes is the Hawaiian Island chain.

Answer to Question 2

A


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.

Did you know?

Russia has the highest death rate from cardiovascular disease followed by the Ukraine, Romania, Hungary, and Poland.

Did you know?

More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.

Did you know?

The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.

Did you know?

Dogs have been used in studies to detect various cancers in human subjects. They have been trained to sniff breath samples from humans that were collected by having them breathe into special tubes. These people included 55 lung cancer patients, 31 breast cancer patients, and 83 cancer-free patients. The dogs detected 54 of the 55 lung cancer patients as having cancer, detected 28 of the 31 breast cancer patients, and gave only three false-positive results (detecting cancer in people who didn't have it).

Approximately 1 pound (0.45 kg) of ground elk meat formed into patties; note the relatively small fa Approximately 1 pound (0.45 kg) of ground elk meat formed into patties; note the relatively small fa
The polymerase chain reaction (PCR). The polymerase chain reaction (PCR).
A mother dies, a father loses his leg—such calamities shattered poor urban families. Orphaned street A mother dies, a father loses his leg—such calamities shattered poor urban families. Orphaned street
Please fully explain in detail Please fully explain in detail
Video: Chloroplast Structure & Light Dependent Reactions (Photosystem 1 and 2 Cyclic Electron Flow)

For a complete list of videos, visit our video library