Galaxies and the Universe

Physics ⇒ Earth and Space Physics

Galaxies and the Universe starts at 9 and continues till grade 12. QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Galaxies and the Universe. How you perform is determined by your score and the time you take. When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.

See sample questions for grade 10

A galaxy is observed to be 10 million light-years away. What does this mean about the light we see from it?

Calculate the distance in kilometers that light travels in 2 years. (1 light-year = 9.46 × 10¹² km)

Describe the difference between a galaxy and a star cluster.

Describe the main difference between a spiral galaxy and an elliptical galaxy.

Explain what is meant by the term 'cosmic background radiation'.

Explain what is meant by the term 'light-year'.

What is a quasar?

What is the name of the effect that causes the light from distant galaxies to shift toward the red end of the spectrum as they move away from us?

What is the name of the force that holds stars together in a galaxy?