Rocks
This type of rock forms from cooled magma or lava.
What is igneous rock?
Fossils are most commonly found in this type of rock.
What is sedimentary rock?
The Earth's crust is broken into large pieces called this.
What are tectonic plates?
This mineral is used to make table salt.
What is halite?
This process involves the wearing away of rocks by wind, water, or ice.
What is erosion?
Marble is a metamorphic rock that forms when this rock undergoes heat and pressure.
What is limestone?
This type of fossil is created when an organism's remains are replaced with minerals.
What is a petrified fossil?
This supercontinent existed about 335 million years ago.
What is Pangaea?
The softest mineral on the Mohs scale.
What is talc?
The process by which water vapor cools and forms clouds.
What is condensation?
Rocks that form from compacted sediments are classified as this.
What are sedimentary rocks?
This fossilized tree resin is often used to make jewelry.
What is amber?
The movement of tectonic plates is driven by this process in the mantle.
What are convection currents?
This mineral is commonly known as fool's gold.
What is pyrite?
These openings in the Earth’s crust release magma, gas, and ash.
What are volcanoes?
This type of igneous rock forms beneath the Earth’s surface.
What is intrusive or plutonic rock?
The oldest fossils on Earth are of these simple, single-celled organisms.
What are stromatolites?
This boundary type occurs when two plates move away from each other.
What is a divergent boundary?
The only mineral that can scratch a diamond on the Mohs scale.
What is a diamond?
This process describes the sinking of dense oceanic crust into the mantle.
What is subduction?
This rare volcanic rock can float on water due to its low density.
What is pumice?
This term refers to a fossil showing evidence of an organism's activity, like footprints or burrows.
What is a trace fossil?
The Himalayas were formed by the collision of these two tectonic plates.
What are the Indian Plate and the Eurasian Plate?
This mineral group is the most abundant in the Earth's crust.
What are silicates?
The rapid release of energy in the Earth’s crust, causing ground shaking.
What is an earthquake?