Which of the Following Is a Method for Measuring the Diameter

question 16

Multiple Choice

Which of the following is a method for measuring the diameter of a star?

• A) watching the body of the Moon go across the star
• B) getting the light curve of an eclipsing binary star
• C) comparing the color of a star seen high above our heads and then again when it's near the horizon
• D) measuring the spectrum of a spectroscopic binary
• E) more than one of the above

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Definitions:

Injection

In economics, a method of adding funds or capital to an economy by government spending or exports; in medicine, it's the act of administering a liquid substance directly into the body through a needle and syringe.

Circular Flow

an economic model that depicts how money moves through the economy, from households to businesses and back, via the markets for goods and services and for factors of production.

Value Added

The enhancement a company gives its product or service before offering the product to customers, essentially the difference between the cost of inputs and the value or price of outputs.

Raw Materials

The basic materials from which products are made, typically extracted natural resources or agricultural products.