2. The Mystery of Mars Vocabulary Geologist Organic Meteorite Interplanetary Atmosphere OCR 2002 5 th grade Lesson 5 The Mystery of Mars Sandra Sanchez Abbott Elementary

3. 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

4. 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

5. 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

6. 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 Sandra Sanchez Abbott Elementary

7. 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

8. Vocabulary Quiz  interplanetary  meteorite  organic  atmosphere  geologist 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. 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