Physics Topic P16 Space (Triple)

A star is a:

• planet

• comet

• celestial body

• asteroid

The star around which Earth orbits is called?

• Proxima Centauri

• Sirius

• The Sun

• Alpha Centauri

A planet is a celestial body that:

• orbits a star and has cleared its orbit of other debris

• is larger than a star

• emits its own light

• is always made of gas

A dwarf planet is:

• a small celestial body that orbits the sun and has not cleared its neighboring region of other objects

• a large planet that has cleared its orbit

• a star that is smaller than the sun

• a moon that orbits a planet

The universe is:

• a vast expanse of space and matter

• a small part of the solar system

• a fictional concept

• a type of galaxy

An asteroid is a:

• planet

• star

• small rocky body orbiting the sun

• comet

An orbit is:

• a path of one object around another object

• a type of star

• a kind of galaxy

• a type of planet

What is a comet?

• A celestial object composed of ice, dust, and rocky material that orbits the Sun

• A type of star

• A planet in the solar system

• A satellite of Earth

A natural satellite is:

• a man-made object orbiting a planet

• a celestial body that orbits a planet

• a type of artificial satellite

• a star in the galaxy

An artificial satellite is a man-made object that is intentionally placed into orbit around a celestial body. Which of the following best describes an artificial satellite?

• A natural object orbiting a planet

• A man-made object placed into orbit

• A type of space debris

• A celestial body like the moon