7.5 Evidence Supports the Big Bang Theory

Multiple Choice

According to the Big Bang Theory, how did the universe begin?

• From a tiny, hot, dense state that has been expanding ever since

• From a massive explosion in space

• From the collision of two galaxies

• From a cold, empty void

Fill in the Blanks

The Big Bang Theory suggests the universe began about

billion years ago.

Multiple Choice

What did Edwin Hubble discover about distant galaxies that supports the idea that the universe is expanding?

• Their light is red-shifted, meaning they are moving away from us

• They are getting brighter over time

• They are shrinking in size

• They are colliding with each other

Open Ended

Why is the discovery of Cosmic Microwave Background Radiation (CMBR) important for our understanding of the early universe?

Multiple Select

Which of the following are considered key evidence for the Big Bang Theory?

• Red-shift of galaxies

• Cosmic Microwave Background Radiation (CMBR)

• Elemental mix of hydrogen and helium

• Presence of black holes

Fill in the Blanks

The universe is estimated to be about

billion years old.

Multiple Choice

What evidence do satellites like COBE, WMAP, and Planck provide for the Big Bang Theory?

• They map tiny temperature changes in the CMBR, confirming the Big Bang model.

• They measure the speed of light in space.

• They detect gravitational waves from black holes.

• They observe the formation of new stars.

Multiple Select

Which of the following are ways scientists collect evidence about the universe?

• Using telescopes to measure red-shift and study galaxy movement.

• Using satellites to map the CMBR's temperature patterns.

• Using microscopes to study atoms in space.

• Using submarines to explore the ocean floor.

Multiple Choice

Which of the following best describes 'red-shift'?

• The stretching of light wavelengths from distant galaxies, indicating they are moving away from us.

• The shrinking of light wavelengths from nearby stars.

• The increase in brightness of a star as it approaches Earth.

• The sudden appearance of new galaxies in the sky.

Open Ended

Explain how the Cosmic Microwave Background Radiation (CMBR) serves as evidence for the Big Bang Theory.

Open Ended

Why does the elemental mix of hydrogen and helium in the universe support the Big Bang Theory?

Multiple Choice

Which of the following is NOT considered evidence for the Big Bang theory?

• Cosmic Microwave Background Radiation (CMBR)

• Red-shift of distant galaxies

• Mapping of CMBR temperature changes by satellites

• The steady state of the universe

Open Ended

Which evidence do you think is the strongest for the Big Bang theory? Why?

Multiple Choice

What is meant by the 'echoes' from the beginning of the universe, as mentioned in the context of the Big Bang theory?

• Faint signals or radiation left over from the early universe

• The sound of galaxies colliding

• The light from the nearest stars

• The gravitational pull of black holes