8.ESS1.1 The Big Bang Theory Vocabulary

Vocabulary flashcards covering key terms and concepts from the 8.ESS1.1 Big Bang Theory Earth and Space Science notes.

universe

everything in space

Big Bang Theory

scientific explanation that the universe began hot and dense and expanded

galaxy

huge group of stars, gas, and dust

star

huge ball of hot gas that gives off light

planet

large object orbiting a star

expansion

spreading out or getting bigger

evidence

information that supports an idea

redshift

stretching of light showing objects are moving away

wavelength

distance between waves

cosmic microwave background

leftover energy from the early universe

telescope

tool used to observe faraway objects

light-year

distance light travels in one year

space

the area beyond Earth

matter

anything that has mass and takes up space

energy

ability to cause change

theory

well-supported scientific explanation

model

representation of an idea or system

observation

information gathered using senses or tools

pattern

noticeable repeated or changing trend

scale

size relationship, especially very large or small