Quiz on Space Physics

What is the angle of tilt of the Earth's axis from the vertical?

• 23.5 degrees

• 45 degrees

• 30 degrees

• 15 degrees

How long does it take for the Earth to complete one rotation?

• 24 hours

• 365 days

• 12 hours

• 28 days

What shape is the Earth's orbit around the Sun?

• Ellipse

• Square

• Circle

• Spiral

How long does it take for the Moon to complete one orbit around the Earth?

• 30 days

• 28 days

• 24 hours

• 365 days

Which planet is known for having the most spectacular rings?

• Saturn

• Jupiter

• Neptune

• Mars

What is the main source of energy for all stars?

• Chemical reactions

• Nuclear fusion

• Solar radiation

• Gravitational collapse

What is the distance light travels in one year called?

• Light-year

• Astronomical unit

• Parsec

• Kilometer

What happens to an average star when it runs out of hydrogen in its core?

• It collapses into a black hole

• It becomes a white dwarf

• It becomes a red giant

• It explodes as a supernova

What is the effect called when light from a star is stretched as it moves away?

• Blueshift

• Redshift

• Spectral shift

• Doppler effect

What is the estimated age of the Universe according to the Hubble Constant?

• 14 billion years

• 10 billion years

• 5 billion years

• 20 billion years