CATEGORY 1: Rock Cycle
This type of rock forms when melted rock cools and hardens.
Answer: What is igneous rock?
This boundary occurs when two plates move away from each other.
Answer: What is a divergent boundary?
The tool scientists use to measure earthquakes.
Answer: What is a seismograph?
A deep valley on the ocean floor formed by subduction.
Answer: What is an ocean trench?
The movement of rock and soil from one place to another.
Answer: What is erosion?
This rock forms from heat and pressure deep underground.
Answer: What is a metamorphic rock?
This boundary occurs when two plates push into each other.
Answer: What is a convergent boundary?
The scale used to measure the strength of an earthquake.
Answer: What is the Richter Scale?
These landforms form when plates push together.
Answer: What are mountains?
The slow movement of Earth's plates over time.
Answer: What is plate tectonics?
These are the remains or traces of plants and animals from long ago.
Answer: What are fossils?
This boundary occurs when plates slide past each other.
Answer: What is a transform boundary?
The point on Earth's surface directly above where an earthquake begins.
Answer: What is the epicenter?
Openings in Earth's crust where lava, gas, and ash escape.
Answer: What are volcanoes?
Melted rock below Earth's surface.
Answer: What is magma?
Small pieces of rock, sand, and soil that are moved by wind or water.
Answer: What is sediment?
This process happens when one tectonic plate moves under another.
Answer: What is subduction?
A sudden shaking of the ground caused by movement along a fault.
Answer: What is an earthquake?
New ocean floor forms at this underwater mountain chain.
Answer: What is a mid-ocean ridge?
The layer of Earth that tectonic plates move on.
Answer: What is the asthenosphere?
The process of breaking down rocks into smaller pieces.
Answer: What is weathering?
This type of boundary can create volcanoes and deep ocean trenches.
Answer: What is a convergent boundary?
Cracks in Earth's crust where rocks move.
Answer: What are faults?
This process creates new crust as magma rises and spreads along the ocean floor.
Answer: What is sea-floor spreading?
The cycle that describes how rocks change from one type to another.
Answer: What is the rock cycle?