7th grade · Science · Unit 10 of 12
Earth's Moving Surface
Plates, the rock cycle and the Cascades.
What your child practices
Practices plate tectonics and evidence from fossils, rocks and continent shapes, the rock cycle, and how processes at different speeds shape Earth's surface, including the Cascade volcanoes.
Oregon State Standards learning standard: 7.ESS2.1; 7.ESS2.2; 7.ESS2.3 · the rock cycle, surface processes at different scales, and evidence for plate motion
Sample questions
A taste of this unit. In the app, questions change every time and get easier or harder to match your child.
Question 1
Matching fossils on continents now far apart are evidence that…
- fossils swim
- birds carried them
- the continents were once joined
- they formed recently
the continents were once joined
Hint: Pangaea.
Question 2
South America and Africa fit together like puzzle pieces. This supports…
- continental drift
- gravity
- photosynthesis
- the water cycle
continental drift
Hint: Shapes match.
Question 3
The San Andreas Fault is where plates…
- stack up
- slide past each other
- dive under
- pull apart
slide past each other
Hint: Transform boundary.
Question 4
Which process is very slow?
- Mountains rising from plate collisions
- A flash flood
- A landslide
- A volcanic eruption
Mountains rising from plate collisions
Hint: Millions of years.
Question 5
Plates move about as fast as…
- your fingernails grow
- a falling rock
- a car on a highway
- a running cheetah
your fingernails grow
Hint: A few centimeters a year.
Question 6
Sandstone buried deep and heated may become…
- limestone
- quartzite, a metamorphic rock
- soil
- lava
quartzite, a metamorphic rock
Hint: Heat and pressure change it.