Astronomy Unit

Which event occurred more than 10 billion years ago?

• Big Bang

• origin of life on Earth

• Pangea begins to break up

• origin of Earth and its Moon

Tags

NGSS.HS-ESS1-2

Which evidence best supports the theory that the universe began with a massive explosion?

• cosmic background radiation in space

• parallelism of planetary axes

• radioactive dating of Earth's bedrock

• life cycle of stars

Tags

NGSS.HS-ESS1-2

scientists infer that the universe began approximately

• 1.0 billion years ago

• 3.3 billion years ago

• 8.2 billion years ago

• 13.7 billion years ago

Tags

NGSS.HS-ESS1-2

Earth, the Sun, and billions of stars are contained within

• a single constellation

• the Milky Way galaxy

• the solar system

• a giant cloud of gas

Tags

NGSS.MS-ESS1-2

Evidence that the universe is expanding is

• red shift of wavelengths because they are shortened

• red shift of wavelengths because they are lenghtened

• blue shift of wavelengths because they are shortened

• blue shift of wavelengths because they are lengthened

Tags

NGSS.HS-ESS1-2

NGSS.HS-PS4-3

red shift indicates a star's movement

• towards earth

• away from earth

Tags

NGSS.HS-ESS1-2

the universe is

• expanding

• shrinking

Tags

NGSS.HS-ESS1-2

energy is produced in stars by

• nuclear fusion of light elements into heavier elements

• nuclear fusion of heavier elements into lighter elements

Tags

NGSS.HS-ESS1-1

NGSS.HS-PS1-8

the milky way galaxy is best described as

• a type of solar system

• billions of stars

• a region in space between Mars and Jupiter

• a constellation

Tags

NGSS.MS-ESS1-2

the shape of the milky way galaxy is

• a circle

• an ellipse

• a spiral

• a square