PS02 Big Bang Theory

A change in the pitch of a sound as a vehicle goes by or an increase in wavelength of incoming light (redshift) from a distant galaxy because of its motion is due to the:

• Doppler Effect

• Butterfly effect

• Refraction of light

• Chaos Theory

Scientists claim that the Universe had a beginning. Which of the following is evidence they use to support their claim? :

• Size of the Earth

• Age of the Earth

• Cosmic Background Radiation

• Elliptical Orbits of planets

Scientists claim that the Universe had a beginning. Evidence of the abundance of this element supports the Big Bang Theory?

• hydrogen

• helium

• lithium

• iron

Scientists observe the stretching out of the wavelength of light (redshift) as Big Bang evidence that shows...

• planets travel in elliptical orbits

• light elements were produced in the big bang

• the farther stars/galaxies are away from us, the faster they're traveling away

• that hyperspace travel is possible

When a star or galaxy is moving away from Earth, the wavelength of the light we perceive is longer, or stretched out. The wavelengths of light of a distant galaxy traveling away from us would appear:

• blue shifted

• red shifted

• gray shifted

• stick shifted