7th Grade Science Plate Boundary Types, Schemes and Mind Maps of Earth Sciences

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7th Grade Science

Plate Boundary Types

May 15, 2020

7th Grade Science

Lesson: May 15, 2020

Objective/Learning Target:

I can describe the different types of tectonic plate boundaries, how they

move and what features they create.

Next watch this Video Over:Plate

Boundaries-Divergent-Convergent-Transform

➔ Convection Currents in the mantle move the plates as the core heats

the slowly-flowing asthenosphere (the elastic/plastic-like part of the

mantle).

➔ The edges of Earth’s plates meet at plate boundaries.

◆ Extended deep into the lithosphere

➔ A different type of plate movement occurs along each type of

boundary.

➔ 3 Types of Plate Boundaries:

◆ Divergent ◆ Convergent ◆ Transform

Some Key Points to Remember...(Write these down on a piece of paper

to use for today’s practice- you may shorten or paraphrase your notes.)

➔ Divergent Plate Boundaries ◆ A plate boundary where two plates move away from each other. ◆ Rifting causes seafloor spreading ◆ Features: May form Rift Valleys on continents & Sea-floor spreading (new crust created) in the ocean; Mid-ocean ridges (due to seafloor spreading), Earthquakes & Fissure Volcanoes ➔ Convergent Plate Boundaries ◆ A plate boundary where two plates move towards each other. ◆ Boundaries between two plates that are colliding. ◆ 3 Types: Continental-Continental, Continental-Oceanic, Oceanic-Oceanic ◆ Features: Earthquakes, Volcanic Island Arcs, Folded Mountains, Trenches ➔ Transform Plate Boundaries ◆ A plate boundary where two plates move past each other in opposite direction. ◆ Features: Lots of Earthquakes and Fault Lines

Key Points to Remember….

Practice (Write this down on your own piece of paper please)

Answer Key

Divergent Boundary Convergent Boundary Transform Boundary