5.4 Vocab

Absolute Zero

• The temperature at which all particle motion stops.

• The temperature at which water freezes.

• The temperature at which all gases condense into liquids.

• The temperature at which chemical reactions cease.

Singularity

• The point in the very early universe where everything was concentrated into an infinitely dense and small state.

• A theoretical point in physics where gravitational forces cause matter to have an infinite density.

• A moment in time when the universe began to expand rapidly after the Big Bang.

• A location in space where time and space are distorted due to extreme gravitational forces.

Big Bang Theory

• The idea that all matter and energy in the universe were concentrated in an infinitely small, dense space and then rapidly expanded.

• A theory that suggests the universe is static and unchanging.

• The concept that the universe will eventually collapse back into a singularity.

• A hypothesis that life on Earth originated from extraterrestrial sources.

Dark Energy

• A theoretical force that counteracts gravity and causes the universe to expand at an accelerating rate.

• A type of energy that is emitted by dark matter.

• A force that pulls objects towards each other in the universe.

• A form of energy that is responsible for the formation of black holes.

Hubble’s Law

• The closer a galaxy is, the faster it is moving away.

• The further away a galaxy is, the faster it is moving away.

• All galaxies are stationary and do not move.

• Galaxies move away from each other at a constant speed.

Inflation

• The rapid expansion of the universe in the first moments after the Big Bang.

• A decrease in the general price level of goods and services.

• The process of increasing the money supply in an economy.

• The gradual cooling of the universe after the Big Bang.