Exoplanets and Stellar Properties Quiz

Exoplanet with a mass of 2 times Jupiter

Orbits much closer to its star than Earth does around the Sun.

Finding planets outside of our Solar System

We have found lots of planets outside our Solar System, mostly by seeing their indirect effects when we observe their parent star.

Energy source that keeps the Sun hot

The combining of light elements into heavier elements, which turns rest mass energy into thermal energy.

Reason Pluto is no longer called a planet

We learned about the Kuiper Belt and realized that Pluto is actually a Kuiper Belt Object.

Composition of planetary cores near the Sun

Made of rock and metal.

Composition of planetary cores far from the Sun

Made of rock and metal and ice.

Determining factor for how hot the insides of a terrestrial planet are

Total size.

Effect of an object emitting light moving towards us

The light that we observe is shorter wavelength than the light that was emitted, and stays the same as time goes on.

Characteristic of giant planets not true for terrestrial planets

They have particles of ice and rock in orbit around them that make rings.

Hubble Space Telescope's ability to see fine details

Because it is above the turbulent atmosphere.

Advantage of the Gran Telescopio Canarias over the James Webb Space Telescope

It can collect more light.

Type of spectrum observed from an astronomical object

Absorption line.

Composition of the spectrum in the case of cooler diffuse gas

Cooler diffuse gas in front of hot dense gas or solid.

Conclusion about a star from its spectrum

It contains Hydrogen.