A Particular Spectrograph,used by an Astronomer to Disperse Light into Its

question 8

Multiple Choice

A particular spectrograph,used by an astronomer to disperse light into its colors,contains a piece of glass that has been ruled with thousands of closely spaced,parallel lines.What is this piece of glass called?

• A) an interferometer
• B) a CCD array
• C) a diffraction grating
• D) a prism

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Definitions:

Aggregate Supply Curve

A graph that shows the relationship between the overall price level in the economy and the total output (GDP) that firms produce and sell, at all possible price levels.

Trade Restrictions

Measures imposed by governments to regulate international trade, including tariffs, quotas, and embargoes.

Natural Resources

The inputs into the production of goods and services that are provided by nature, such as land, rivers, and mineral deposits.

Aggregate Demand

The total demand for all finished goods and services produced in an economy at a given time and price level.