Which Two Energy Sources Can Help a Star Maintain Its

question 30

Multiple Choice

Which two energy sources can help a star maintain its internal thermal pressure?

• A)nuclear fusion and gravitational contraction
• B)nuclear fusion and chemical reactions
• C)nuclear fission and gravitational contraction
• D)nuclear fusion and nuclear fission
• E)chemical reactions and gravitational contraction

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Definitions:

IF Function

A logical function in programming and spreadsheet software that returns one value if a condition is true and another value if it's false.

Logical Test

An evaluation in programming and spreadsheet formulas that returns TRUE or FALSE based on a specific condition.

Sparkline Chart

A mini-chart embedded within a cell in a spreadsheet to show a visual summary or trend.

Absolute Cell Reference

In spreadsheet applications, a cell reference that remains constant even if the formula is copied to a different location.