Science Challenge

What is the flow of electric charge called?

• charge stream

• electricity flow

• power movement

• electric current

Which gas makes up the majority of Earth's atmosphere?

• Argon

• Nitrogen

• Carbon dioxide

• Oxygen

What is the unit of electric current?

• Ampere (A)

• Ohm

• Volt

• Joule

What is the layer of the atmosphere where weather occurs?

• mesosphere

• ionosphere

• troposphere

• stratosphere

What is the process of electricity moving through a conductor called?

• conductive flow

• electric current

• electric flow

• power stream

Which layer of the atmosphere protects us from harmful UV rays?

• Exosphere

• Stratosphere

• Troposphere

• Mesosphere

What is the SI unit of electric potential difference?

• joule

• ohm

• ampere

• volt

What is the outermost layer of the Earth's atmosphere called?

• Mesosphere

• Thermosphere

• Exosphere

• Troposphere