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The Mystery of Mars
Vocabulary
Geologist
Organic
Meteorite
Interplanetary
Atmosphere
OCR 2002 5th grade
Lesson 5 The Mystery of Mars
Sandra Sanchez
Abbott Elementary
Geologist
 “use context clues and word
structure”
 The little robot geologist
dug its wheels into the
red Martian dirt, churning
up the soil to analyze its
texture and clumpiness.
 The geologist studied the
soil in our area to
determine if the land was
good for crops.
geologist- a person who studies the solid mater on
a moon or planet
Organic
 “use apposition”
 Another experiment looked
for organic molecules, the
molecules that make up
living things.
 My brother takes an
organic chemistry class in
college. He studies the
molecules of living things.
organic- taken from a living being
Meteorite
 “use context clues”
 Scientist know that
meteorites and
interplanetary dust deliver
a steady supply of organic
molecules to the Martian
surface.
 The scientist found
remnants of a meteorite in
the desert.
meteorite- a piece of matter from the
solar system that hits a planet or moon’s
surface
Interplanetary

“use context clues, word structure”
 Science fiction stories
sometimes include
interplanetary travel
between Earth and
another planet.
 The spacecraft on Mars
radioed an
interplanetary
communication back to
Earth.
interplanetary- shared between planets
Atmosphere
 “use context clues, word structure”
 Earth is surrounded by an
atmosphere that protects all
the plants and animals on the
plant from the extreme
conditions in space.
 Earth’s atmosphere contains
mostly oxygen, whereas
Mars’s contains mostly carbon
dioxide.
atmosphere- the gases that
surround a planet or moon
Sandra Sanchez
Abbott Elementary
Vocabulary Quiz
1. A _________ is someone who
studies rocks on Earth or the
moon.
2. The Earth is surrounded by a
protective layer of air, this layer
is called the _______.
3. The astronauts used
_________communication to
inform NASA of Mars weather
conditions.





interplanetary
meteorite
organic
atmosphere
geologist
4. In an ________ college course,
you would be studying the
molecules of living things.
5. What is a piece of matter from
the solar system that hits a
planet or the moon’s
surface?__________
Sandra Sanchez
Abbott Elementary