Question

10 multiple choice 2 points
an object composed mainly of ice is orbiting the sun in an elliptical path. this object is most likely
a planet.
an asteroid.
a meteor.
a comet.
11 multiple choice 2 points
a star is a celestial object that produces its own heat and light.
which of these celestial objects is the closest star to earth?
mars
venus
the sun
the moon
12 multiple choice 2 points
the sun is an average yellow star in the milky way galaxy, which is described as
a dwarf galaxy.
a spiral galaxy.
an elliptical galaxy.
an irregular galaxy.

Explanation:

• Question 10: Comets are mainly composed of ice and dust and orbit the Sun in elliptical paths. Planets are large, mostly rocky or gaseous (not mainly ice). Asteroids are rocky. Meteors are small debris that burn up in the atmosphere.
• Question 11: The Sun is a star that produces its own heat and light. Mars and Venus are planets (do not produce their own light). The Moon is a satellite (does not produce its own light).
• Question 12: The Milky Way is classified as a spiral galaxy. Dwarf galaxies are smaller. Elliptical galaxies have a more rounded shape. Irregular galaxies have no defined shape.

Answer:

1. a comet.
2. the sun.
3. a spiral galaxy.