Which layer of the atmosphere do we live in?

• troposphere
• mesosphere
• thermosphere
• exosphere

Which layers of the atmosphere are the hottest?

• troposphere & thermosphere
• stratosphere & thermosphere
• mesosphere & thermosphere
• troposphere & stratosphere

Which layer is known as the weather layer?

• stratopshere
• thermosphere
• mesosphere
• troposphere

Which layer of the atmosphere contains both the ionosphere and the exosphere?

• troposphere
• stratosphere
• mesosphere
• thermosphere

Which layer of the atmosphere contains a special form of oxygen called the ozone layer?

• mesosphere
• stratosphere
• thermosphere
• ionosphere

What happens to the density (thickness)/ air pressure of the air as you increase in altitude?

• density increases
• density decreases
• density stays the same
• density disappears

What is the third layer of the atmosphere from the ground called?

• thermosphere
• mesosphere
• troposphere
• stratosphere

What are the two most abundant gases in earth's atmosphere?

• nitrogen & oxygen
• carbon dioxide & water vapor
• hydrogen & oxygen
• oxygen and ozone

Which layer of the atmosphere is used to bounce radio signals across the earth?

• ionosphere
• stratosphere
• mesosphere
• troposphere

What is the coldest layer of the atmosphere?

• troposphere
• mesosphere
• stratosphere
• thermosphere