Plate Boundaries
True or False: Convergent Boundaries are when 2 plates pull away from each other.
False
What is the inner layer of the earth called and is made up of solid iron?
inner core
What type of rock forms from the cooling and solidifying of lava or magma?
Igneous Rock
True or False: A volcano is an opening in Earth’s crust where melted rock, ash, and gases escape from inside the Earth.
True
Which type of boundary is it when 2 plates are pulling apart from each other?
Divergent Boundary
What is happening to the plates at a subduction?
Subduction is when one plate slides down underneath the other.
What is the outside layer of the Earth called?
Crust
What type of rock forms when layers are compacted and cemented on type of each other?
Sedimentary Rock
What type of volcano is wide with gentle slopes and usually less explosive?
Shield Volcano
Mountains, volcanoes and trenches are formed at which boundary mostly?
Convergent Boundary
What is a transform boundary?
When 2 plates slide past each other.
Who discovered the theory of continental drift?
Alfred Wegner
What process breaks down rocks into smaller pieces through wind or water?
Weathering
What type of volcano is tall and steep-sided and can be very explosive?
Composite or Stratovolcano
Scientists use this instrument to measure small earthquakes that can signal magma movement beneath a volcano.
Seismometer (or graph)
Faults are formed from which boundary?
Transform boundary
Give your BEST definition/explanation of Continental Drift.
Continents were once one massive land but then drifted apart due to tectonic plate movement.
What 2 things can make an existing rock into metamorphic rock?
Heat & Pressure
Volcanoes described as currently erupting or likely to erupt again are given this status.
Active
This dangerous volcanic flow, made of hot gas, ash, and rock, can travel at high speeds and is often the most deadly eruption hazard.
Pyroclastic Flow
What is the Ring of Fire and what ocean is it closest to?
It is the place where most earthquakes and volcanic eruptions occur in the Pacific ocean
List the 4 layers of the earth from OUTER to INNER
1. Crust,
2. Mantle
3. Outer Core
4. Inner Core
What process turns solid rock into molten material beneath Earth’s surface, restarting the rock cycle?
Melting
What is the difference between magma and lava?
Magma is beneath earth's surface and lava is when magma reaches the surface?
What process involves dissolved minerals crystallizing between sediment grains, effectively “gluing” them together into solid rock?
Cementation