OD4: Unit 1 VOCABULARY

This is a large natural object that travels around Earth. After the Sun it is the brightest object in the sky.

• Asteroid

• Moon

• Comet

• Meteorite

This is a chunk of rock and metal in outer space that is in orbit around the Sun.

• Asteroid

• Moon

• Comet

• Meteorite

This is a small chunk of dust and ice that orbits, or travels around, the sun.

• Asteroid

• Moon

• Comet

• Meteorite

This is a chunk of rock from space that falls through the atmosphere onto the earth’s surface.

• Asteroid

• Moon

• Comet

• Meteorite

This place consists of the sun and everything that orbits, or travels around, the sun. This includes the planets and their moons, asteroids and comets.

• Stars

• Galaxy

• Solar system

• Universe

These are huge glowing balls of gases. The closest star to Earth is the Sun.

• Stars

• Galaxy

• Solar system

• Universe

This is a group of stars, clouds of gas, and dust particles that move together through the universe.

• Stars

• Galaxy

• Solar system

• Universe

This is everything we can touch, feel, sense and measure. It includes living things, planets, stars, galaxies, dust clouds, light, and even time.

• Stars

• Galaxy

• Solar system

• Universe

A vehicle used for traveling in space.

• Telescope

• Observatory

• Universe

• Spacecraft

An instrument designed to make distant objects appear closer.

• Telescope

• Observatory

• Universe

• Spacecraft