Which of the following is the outermost of Earth's layers?

• Mantle
• Core
• Atmosphere
• Crust

Which of Earth's layers has the ability to flow?

• Mantle

• Crust

• Outer Core
• Inner Core

The thinnest layer of Earth is the ________.

• mantle
• outer core
• inner core
• crust

The lithosphere is composed of which layers of Earth?

• Crust and lower mantle
• Inner core and outer core
• Crust and upper mantle
• Upper mantle and lower mantle

Where is the crust the thickest?

• Beneath large cities
• In flat plains
• Under oceanic ridges
• Under continental areas

Where do convection currents take place?

• The Crust

• The Mantle

• The Inner Core

• The Outer Core

What is the outer composed of?

• The outer consists of liquid iron and nickel

• The outer is made of organic materials.
• The outer is composed of protective materials.
• The outer is formed from gaseous elements.

Is the inner core solid?

• Yes, the inner core is solid.
• No, the inner core is liquid.

What is heat?

• Heat is the thermal energy transferred due to temperature difference.

• Heat is the force applied to an object.
• Heat is the temperature of an object.
• Heat is a type of matter.

Heat is always transferred from _____ temperature to ______ temperature.

• higher temperature to lower temperature
• lower temperature to higher temperature
• random temperature to random temperature
• equal temperature to equal temperature