What Causes the Auroras in the Upper Atmosphere

question 90

Multiple Choice

What causes the auroras in the upper atmosphere?

• A)Visible light interaction with the asthenosphere.
• B)AM radio broadcasts.
• C)Various weather phenomena.
• D)The interaction of the solar wind and upper layers of the atmosphere of Earth.

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Definitions:

Tumor

An abnormal mass of tissue that forms when cells grow and divide more than they should or do not die when they should.

Irregular Ragged

Characterized by a rough or uneven edge or surface, often found in a description of wounds or fabrics.

Melanoma

A type of skin cancer that originates from melanocytes and is noted for its ability to spread rapidly to other parts of the body.

Ordinary Mole

A common small, dark spot or growth on the skin, usually benign and composed of melanocytes.