7.2.4 The Universe True/False

The Universe is composed of billions of galaxies that all appear to be receding from Earth.

Cosmic microwave background radiation (CMBR) is thought to have been produced in the early stages of the formation of the Universe.

Hubble’s law relates the speed of recession of a distant galaxy to its distance away.

The Hubble constant represents the rate at which the Universe is contracting.

Hubble\’s law relates the speed of recession of galaxies to their brightness measurements.

The redshift in the light from distant galaxies provides evidence that the Universe is contracting.

The Doppler effect explains the change in pitch of sound from a moving source.

The Big Bang theory suggests that the Universe started about 14 billion years ago from one place with a huge explosion.

The density of matter in the Universe is estimated to be 100% visible.