Focus On Physical Science: California Grade 8

Lesson 4: Asteroids, Comets, and Meteoroids

Standards Check

1.
What is the difference between meteors and comets? 4.e
A)Meteors can burn up as they enter a planet's atmosphere and comets rarely enter a planet's atmosphere.
B)Most comets are found outside the solar system, and meteors are found within.
C)Comets are made of frozen ice and rock and meteors are made of rock.
D)all of the above
2.
What is a meteorite? 4.e
A)a comet that strikes Earth
B)a meteoroid that strikes Earth
C)a dust ball that strikes Earth
D)an asteroid that strikes Earth
3.
A(n) _____ is composed of dust and rock particles mixed with frozen water, methane, and ammonia. 4.e
A)comet
B)asteroid
C)meteoroid
D)meteorite
4.
How large are meteorites? 4.e
A)smaller than pebbles
B)several miles in diameter
C)They can be as small as a pebble as large as several tons
D)1 AU wide
Grade 8
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