Activity 2.2 Modeling Martian Craters. Your Name Enter Date. Big Question: How do impact craters form?. Focus Questions: How do impact craters form on planets? 2. How do scientists study impact craters on Earth and Mars? 3. What do scientists learn by studying impact craters?.
Modeling Martian Craters
How do impact craters form?
How do impact craters form on planets?
2.How do scientists study impact craters on Earth and Mars?
3. What do scientists learn by studying impact craters?
Students will be able to:
Explain how impact craters form on planets.
2. Describe how scientists study Impact Craters on Earth and Mars and what they can learn from them.
3. Identify factors that influence size & shape of impact craters.
5. Use a 3-dimensional model to study impact craters.
Why Compare Earth and Mars?
Rocks from space crash into planets (including Earth) all the time. If space rocks are large enough, they will explode into the ground forming a crater.
(Craters are also formed on Earth and Mars by volcanoes.)
Space rocks that create craters are call Impactors.
The rock melts and sends fragments flying called ejecta which piles up around the crater and forms a raised rim.
Rocks from space have different names.
METEOROIDS - Rocks traveling through space
METEORS - Meteoroids that enter a planet’s atmosphere
METEORITES - Meteors that survive the trip and land
IMPACTORS - Meteorites that explode upon impact and create craters
Earth and Space Science
Jim Garvin, Ph.D.
NASA Chief Scientist
Students Objectives for 2.2:
influence the size and shape
of impact craters.
model of Martian Impact
Lizzie shows the importance of wearing goggles
Procedure: Part 1
Set up flour tray with cocoa
Make clay impactor and drop it from 30 cm
Lift out with 2 toothpicks and make observations
Part 2 & 3: Design and Conduct an Investigation p. 63
Brainstorm factors affecting crater size or shape.
Choose one factor to investigate = INDEPENDENT VARIABLE
Choose a factor to measure each time you adjust Independent Variable = DEPENDENT VARIABLE
Form a HYPOTHESIS
Design experiment and try it out!
Part 4: Modeling Martian Impact Craters
Outline rims of craters on Master 2.2A, measure and record on Master 2.2B
Calculate scale factor for your model
Using prior information, develop a plan to create a 3-D scale model of Craters A through E
Follow your plan and create the model in the flour tray, may take some trial and error
Complete the table on Master 2.2B
Observations: p 64
What factors influenced size and shape of craters?
How are your craters similar/different from Mars?
Was your 1st try at creating 3-D scale model successful? Why or why not?
Mary Cahill’s students
Conclusions: (answer suggestions p. 65)
What are some advantages and disadvantages of using 3-D models to study craters on Mars?
How could you make a more realistic model of craters on Mars?
Revisit Big Question - How do Impact Craters Form?
Novel: Mars Year 1: Missing Brad Strickland & Thomas Fuller
National Science Standards:
What standards in your state?
www.jason.org, Team JASON Online, Teacher Center, then Align with Standards & Textbooks
Questions and Adaptations