Unit review 7th grade 23-24

The layers of Earth are the ________.

• hydrosphere, atmosphere, troposphere, outer core and inner core
• stratosphere, ionosphere, troposphere, outer core and inner core
• crust, mantle, outer core and inner core
• tectonic plates, faults, lithosphere and core

A _________ plate boundary happens when two plates slide past each other.

A __________ plate boundary happens when two plates slowly crash into each other.

A ________ plate boundary happens when two plates slide apart.

The hypothesis that continents move slowly is called ________________________________.

• plates
• lithosphere
• continental drift
• convection

Name 2 pieces of evidence for continental drift.

All continents once might have been connected in a large landmass called _________________________.

• Mantle
• Pangaea
• asthenosphere
• plates

Are tectonic plates still moving today?

Name two types of natural disasters that often occur at plate boundaries.

Which scientist suggested the theory of seafloor spreading?

• Harry Hess
• Marie Tharp
• Alfred Wegner