Comets

Sometimes I am called a "dirty snowball". I have a hydrogen cloud, coma, and a nucleus. I am invisible except when near the sun. What am I?

• Asteroid

• Star

• Meteor

• Comet

The tail of a comet usually faces

• toward the sun

• toward the Earth

• away from the Sun

• away from the Earth

The shape of comet's paths are ________________.

• circular

• elliptical

• irregular

What do comets, asteroids and meteors all have in common?

• They all are made of ice

• They all hit Earth's surface

• They all orbit the sun

• They have nothing in common

^{Objects made of ice, gas and dust and orbit our sun are called:}

• Asteroids

• Comets

• Meteroids

• Meteors

These objects that orbit the sun are nicknamed, "dirty snowballs."

• Comets

• Asteroids

• Meteors

• Meteroids

choose the best description for a comet

• icy small body with a tail

• chunky rock

• rock moving body

Which object in space looks like a "dirty snowball" because of its composition of ice, gas and dust?

• Asteroid

• Meteoroid

• Comet

• Meteor

An object described as a ball of dust, ice, and gases, and usually has a tail is called an ______

• Asteroid

• Meteor

• Meteorite

• Comet

The cloud of gas and dust around the solid icy ball of a comet is the...

• Nucleus

• Coma

• Tail