HR Diagram Practice

HR Diagram Practice

Assessment

Flashcard

Science

8th Grade

Practice Problem

Hard

Created by

Wayground Content

FREE Resource

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15 questions

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1.

FLASHCARD QUESTION

Front

What is the HR Diagram?

Back

The HR Diagram (Hertzsprung-Russell Diagram) is a scatter plot that shows the relationship between the stars' absolute magnitudes or luminosities versus their stellar classifications or effective temperatures.

2.

FLASHCARD QUESTION

Front

What are Main Sequence Stars?

Back

Main Sequence Stars are stars that are in the stable phase of their life cycle, where they fuse hydrogen into helium in their cores. They are found along the diagonal band of the HR Diagram.

3.

FLASHCARD QUESTION

Front

What is Luminosity?

Back

Luminosity is the total amount of energy emitted by a star per unit time, often measured in watts. It indicates how bright a star would appear at a standard distance.

4.

FLASHCARD QUESTION

Front

What is a Red Giant?

Back

A Red Giant is a late stage in a star's life cycle, characterized by a large radius and high luminosity, but a cooler surface temperature, resulting in a reddish appearance.

5.

FLASHCARD QUESTION

Front

What is a Supergiant Star?

Back

Supergiant Stars are among the largest stars in the universe, with high luminosity and mass. They are found at the top of the HR Diagram and can be several hundred times larger than the Sun.

6.

FLASHCARD QUESTION

Front

What is a White Dwarf?

Back

A White Dwarf is a small, dense star that is the remnant of a low to medium mass star that has exhausted its nuclear fuel and shed its outer layers.

7.

FLASHCARD QUESTION

Front

What is the spectral class of a star?

Back

The spectral class of a star is a classification system based on its temperature and the characteristics of its spectrum, which includes types such as O, B, A, F, G, K, and M.

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