Stars and galaxies test prep

Which of the following is the correct definition of a light year?

• The distance light travels in one year

• The time that it takes light to travel from the Sun to the edge of the solar system

• The time that it takes light to travel 10 million kilometers

• The average distance from Earth to the Sun

Match the type of galaxy to its description.

• Spiral galaxy

• Irregular galaxy

• Elliptical galaxy

Match the type of galaxy to its description. Oval shaped; has older, yellow to red stars and not much dust or gas

• Spiral galaxy

• Irregular galaxy

• Elliptical galaxy

What element is the main component of most stars?

• Nitrogen

• Oxygen

• Iron

• Hydrogen

Tags

NGSS.HS-ESS1-1

NGSS.HS-ESS1-3

The Doppler effect explains what phenomenon that helps us understand the motion of stars?

• Red-shifting of light- a star that is moving away from us will have wavelengths that are stretched and therefore appear redder than normal

• Amplitude shifting- objects that are exposed to radiowaves will have smaller amplitudes than those exposed to gamma rays

• Blue-shifting of light- a star that is moving away from us will have wavelengths that are compressed and therefore appear bluer than normal

• Gravitational distortions- objects close to black holes will respond less than normal to gravity

Tags

NGSS.HS-PS4-1

Match the terms to their definitions: 1. An object whose gravity is so strong that nothing, not even light, can escape.

• neutron star

• emission spectrum

• Black hole

• planetary nebula

• Doppler effect

Match the terms to their definitions: 2. A group of stars in the same direction from Earth that look like they form a pattern.

• planetary nebula

• neutron star

• constellation

• emission spectrum

• Doppler effect

Match the terms to their definitions: The process in which smaller atoms combine at extremely high temperatures, forming heavier atoms and (almost always) releasing energy.

• Doppler effect

• planetary nebula

• fusion

• neutron star

• emission spectrum

Tags

NGSS.HS-ESS1-1

NGSS.HS-ESS1-3

NGSS.HS-PS1-8

Our galaxy is called the __________ and it is a __________ galaxy.

• Milky Way

• spiral

• Orionoid 23

• irregular

• Sun Solar System

Tags

NGSS.MS-ESS1-2

Drag and drop to put the steps of the life cycle of a sun-sized star in order. You will NOT use all of the steps listed.

• Massive main sequence star

• Red supergiant

• Black hole

• Stellar nebula

• Supernova

Tags

NGSS.HS-ESS1-3