Reach for the Stars Overall Practice Test

What is the common "pathway" to find the constellation Ursa Minor?

• Using the Summer Triangle

• Using the handle of the Big Dipper asterism

• Looking for the Zodiac constellations

• Using Orion to find Taurus

Which constellation is NOT part of the Winter Triangle?

• Sirius

• Procyon

• Vega

• Betelgeuse

According to the Greek alphabet star naming system, what does a star named "Beta" in a constellation signify?

• It is the brightest star in that constellation.

• It is the second brightest star in that constellation.

• It is the dimmest star in that constellation.

• It is the largest star in that constellation.

What marks the beginning of a star's main sequence stage?

• The star's temperature begins to rise.

• The star's density decreases.

• Nuclear fusion begins.

• The star collapses under its own gravity.

Tags

NGSS.HS-ESS1-1

Which process do lower-mass stars primarily use to fuse Hydrogen into Helium?

• Carbon-nitrogen-oxygen (CNO) cycle

• Triple-alpha process

• Proton-proton (p-p) chain

• Electron capture

During the formation of a star, what happens after the molecular cloud collapses under its own gravity and instability?

• The cloud's density decreases and it disperses.

• The cloud's temperature drops and it forms a protostar.

• The cloud's temperature rises and it becomes a protostar.

• The cloud expands and becomes a main sequence star.

What is the approximate starting temperature for the proton-proton chain reaction in star formation?

• 10^2 Kelvins

• 10^4 Kelvins

• 10^6 Kelvins

• 10^8 Kelvins

Tags

NGSS.HS-PS1-8

What is the primary fusion process in higher-mass stars that fuses Hydrogen into Helium?

• Proton-Proton Chain

• Triple-Alpha Process

• CNO Cycle

• Electron Capture

What happens to a low-mass star when it runs out of helium?

• It expands into a red supergiant

• It contracts into a neutron star

• It becomes a black hole

• It compresses into a white dwarf

During the post-main sequence of a high-mass star, what does it become when it runs out of hydrogen?

• A white dwarf

• A black dwarf

• A red supergiant

• A neutron star

Tags

NGSS.HS-ESS1-3