Semester Exam Spring 2025

The 4 galaxy classifications are:

• Spiral, Elliptical, Irregular, Barred Spiral

• Spiral, Barred Spiral, Elliptical, Dwarf

• Elliptical, Spiral, Ring, Irregular

• Spiral, Elliptical, Spherical, Barred

CH 8: A galaxy with the classification of “Sa” is a tightly wound spiral galaxy with a large central bulge and tightly packed arms. Which type of galaxy is this?

• Elliptical galaxy

• Irregular galaxy

• Barred spiral galaxy

• Spiral galaxy

Short wavelengths are _______ and long wavelengths are _______ on the spectrum.

• blue; red

• red; blue

• green; yellow

• yellow; green

Tags

NGSS.HS-PS4-1

CH 8: Redshift refers to:

• The shift of light to longer wavelengths as objects move away from us

• The increase in brightness of a star

• The decrease in temperature of a planet

• The rotation of a galaxy

Tags

NGSS.HS-ESS1-2

CH 8: Name the evidence for the big bang.

• Cosmic microwave background radiation

• Existence of black holes

• Presence of dark matter

• Formation of asteroids

Tags

NGSS.HS-ESS1-2

Cosmic background radiation is:

• the radiation left over from the Big Bang

• the light from distant stars

• the heat from the Sun

• the energy from black holes

Tags

NGSS.HS-ESS1-2

CH 8: Hubble contributed to astronomy by discovering that:

• the universe is expanding

• the Earth orbits the Sun

• the Moon has craters

• the Milky Way is the only galaxy

The 3 subatomic particles that make up an atom are:

• Proton, Neutron, Electron

• Proton, Photon, Electron

• Neutron, Electron, Positron

• Proton, Neutron, Positron

CH 8: A law is a statement that describes an observable occurrence in nature that appears to always be true, while a theory is a well-supported explanation of why and how a process occurs. Which of the following best describes the difference between a law and a theory?

• A law explains why phenomena occur, while a theory describes what happens.

• A law describes what happens, while a theory explains why it happens.

• A law and a theory are the same thing in science.

• A law is less supported by evidence than a theory.

CH 8: Newton's 3 laws of motion are:

• Law of Inertia, Law of Acceleration, Law of Action-Reaction

• Law of Gravity, Law of Thermodynamics, Law of Conservation

• Law of Reflection, Law of Refraction, Law of Diffusion

• Law of Magnetism, Law of Electromagnetism, Law of Induction

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2