Understanding the Expanding Universe

What analogy is used to explain the expansion of the universe?

• A balloon being inflated

• A sponge soaking up water

• A loaf of raisin bread in the oven

• A rubber band being stretched

What observation supports the idea that the universe is expanding?

• Galaxies are moving towards us

• Galaxies are stationary

• Galaxies are moving away at varying speeds

• Galaxies are shrinking

Who was the astronomer that first observed a spiral nebula moving away from us?

• Albert Einstein

• Edwin Hubble

• Vesto Slipher

• George Lemaitre

What did Alexander Friedman contribute to the understanding of the universe?

• He proved the universe is static

• He discovered the Big Bang

• He invented the telescope

• He proposed that space can stretch and warp

What is the modern understanding of the Big Bang?

• A rapid expansion of space

• A static event

• A slow contraction

• A single point explosion

What is the outdated concept related to the Big Bang?

• The universe started from a single point

• The universe is infinite

• The universe is static

• The universe is contracting

What does the universe expanding into infinity imply?

• The universe will eventually stop expanding

• The universe is finite

• The universe is expanding into itself

• The universe is shrinking

What is one possible implication of an expanding universe?

• The universe is static

• The universe is contracting

• There are multiple universes

• The universe is shrinking

What is a possible scenario if the universe is not infinite?

• It is static

• It is shrinking

• It is expanding into another universe

• It is contracting

What is a concept that is difficult to wrap our heads around regarding the universe?

• The universe is static

• The universe is finite

• The universe is shrinking

• The universe is expanding into infinity