Convection Currents

What is the relationship between temperature and density in convection?

• As temperature decreases, density increases
• As temperature increases, density decreases
• As temperature increases, density increases
• As temperature decreases, density decreases

Why do scientists believe that the Earth's mantle is convecting?

• To create mountains
• To create subduction zones
• To create volcanoes
• All of the above

Tags

NGSS.MS-ESS2-1

Why is studying convection important in various scientific fields?

• To understand plate tectonics
• To understand natural phenomena
• To understand heat transfer
• All of the above

Tags

NGSS.MS-ESS2-6

NGSS.MS-PS3-3

NGSS.MS-PS3-4

What is the driving force behind convection in the Earth's mantle?

• Plate tectonics
• Magma
• Gravity
• Friction

How do convection cells in the atmosphere move?

• From the poles to the equator
• In a straight line
• From the equator to the poles
• In a circular motion

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

How does temperature affect density in convection?

• As temperature increases, density increases
• As temperature decreases, density decreases
• As temperature decreases, density increases
• As temperature increases, density decreases

Tags

NGSS.MS-ESS2-6

What is convection?

• The transfer of heat through radiation
• The transfer of heat through friction
• The transfer of heat through conduction
• The transfer of heat through bulk movement of fluids

Tags

NGSS.MS-ESS2-6

How does convection affect the movement of materials in the Earth's oceans?

• It has no effect on the movement of materials
• It causes water to sink at the equator and rise at the poles
• It causes water to sink at the poles and rise at the equator
• It causes water to move in a circular motion

Tags

NGSS.MS-ESS2-6

What is the role of gravity in convection?

• To prevent convection from occurring
• To create turbulence
• To pull cool air up
• To push warm air down

Which of the following is NOT an example of convection in everyday life?

• Boiling water in a pot
• A hot air balloon rising
• A fan blowing cool air
• A lava lamp

Tags

NGSS.MS-PS3-3