Unit 7- Astronomy

Lesson 1-

• atmosphere

• axis

• hemisphere

• universe

• eclipse

• planet

• orbit

• solar system

• rotate

• tilted

Lesson 2-

• eclipse

• celestial bodies

• core

• debris

• meteoroids

• satellites

• terrain

Lesson 3-

• naked eye

• probe

• frigid

• greenhouse

• NASA

• polar

Lesson 4-

• gas giant

• hydrogen

Lesson 5-

• asteroids

• comets

• meteor

• asteroid belt

• Halley's comet

• meteorite

Lesson 6-

• galaxy

• astronomer

• billion

• Milky Way Galaxy

• Andromeda Galaxy

Lesson 7-

• astronomical

• atoms

• cluster

• fuse

• irregular

• light-years

• spiral

Lesson 8-

• constellation

• Ursa Major

• Ursa Minor

• Polaris

• ladle

• magnetic

• navigate

• orient

• orienteering

Lesson 9-

• module

• probes

• reusable

• spacecraft

• triumph

Lesson 10-

• observatory

• launch

• Hubble Telescope

• astronaut

• manned

• Apollo 11

• gravity

•  attraction

Lesson 11-

• black hole

• force

• gravitational pull

• gravity

• matter

• tides

Lesson 13-

• calculations

• diurnal

• geocentric

• heliocentric

• hypothesis

• logical

• opposed

Lesson 15-

• space shuttle

• shuttle

• booster rocket

• especially

• unmanned

Lesson 16-

• aeronautics

• applications

• pursue

• refugees

• tragedy

• African-American studies

• chemical engineering

• Peace Corps

• health care

• endeavour

Lesson 17-

• international

Lesson 19-

• data

• expanding

• phenomenon

• compressed

• theory

• Big Bang theory

• astrophysicist

• matter

• sphere