19 BOWER stars !

Eduardo observes the stars through his telescope. He states that the star Regulus is brighter than the star Rigel. In reality, Rigel has a greater absolute brightness than Regulus. What can explain Eduardo’s observation?

• Regulus is much closer to Earth than Rigel

• Rigel is much closer to Earth than Regulus.

• Regulus is a hotter star than Rigel

• Rigel is a hotter star than Regulus

The graph above shows the relative sizes and surface temperatures of four groups of stars. The surface temperature of the stars is measured in Kelvin (K). The Sun is part of the main sequence group.

According to the graph, the Sun is best described as

• average sized, with a surface temperature of approximately 6,000 K

• massive sized, with a surface temperature of approximately 10,000 K

• massive sized, with a surface temperature of approximately 20,000 K

• average sized, with a surface temperature of approximately 8,000 K

Tags

NGSS.HS-ESS1-1

NGSS.HS-ESS1-3

One physical property of a star is apparent magnitude. Which of the following is used in determining the apparent magnitude of a star?

• the constellation the star is in

• the number of times the star rotates

• the distance the star is from Earth

• the number of prominences the star makes

Which statement most accurately describes the relationship between the color and temperature of stars?

• yellow stars are cooler than red.

• Red stars are hotter than white stars

• White stars are cooler than yellow stars

• Blue stars are hotter than red stars

Which of the groups below best orders the stars from hottest to coolest?

• Antares, Spica, Sun, Aldebaran

• Sun, Spica, Antares, Aldebaran

• Spica, Sun, Aldebaran, Antares

• Antares, Aldebaran, Sun, Spica

The sun is an averaged sized star that was formed by the same processes that form most other stars. Which of the following describes what astronomers would expect to see if they examined most other stars?

• Most are the same age

• They all use the same fuel

• Most appear to be white in color

• Most are found outside of galaxies

In the following diagram, which star is most likely to be the coolest and dimmest?

• C

• A

• B

• E

What is absolute magnitude?

• It is the relative brightness of a star.

• It is how bright a star looks relative to how close it is to Earth.

• It is the exact brightness.

• it does not have to do with brightness

What is Apparent magnitude?

• It is how bright a star looks relative to how close it is to Earth.

• exact brightness

• how bright a star actually is

• brightness doesn't matter

What is the composition of a star?

• made of gas mostly hydrogen and helium and emits light.

• Made mostly of nitrogen and oxygen and emits light.

• It is made of carbon dioxide and emits light.

• It is made mostly of argon and nitrogen and emits light.

Tags

NGSS.HS-ESS1-1