An Asteroid Has a Perihelion (The Orbit's Closest Approach to the Sun)of

question 73

Multiple Choice

An asteroid has a perihelion (the orbit's closest approach to the sun) of 1.5 AU and a period of revolution of 8.0 y.What is its greatest distance from the sun (its aphelion) ?

• A) 8.0 AU
• B) 6.5 AU
• C) 4.0 AU
• D) 2.5 AU

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Definitions:

Troposphere

The lowest layer of Earth's atmosphere, extending up to about 10 kilometers, where most weather phenomena occur and where the concentration of greenhouse gases is significant.

Photosynthesis

The process by which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide and water, generating oxygen as a byproduct.

Species Diversity

The variety of different species of animals, plants, fungi, and microorganisms that exist within a particular ecological community or ecosystem.

Deforestation

The removal of a forest or stand of trees where the land is thereafter converted to a non-forest use such as agriculture or urban development.