Understanding Weather and Climate

What is the primary difference between weather and climate?

• Weather refers to long-term atmospheric conditions, while climate refers to short-term changes.

• Weather is the day-to-day state of the atmosphere, while climate is the average weather over a long period.

• Weather is only about temperature, while climate includes all atmospheric conditions.

• Weather is predictable, while climate is not.

Which of the following is an atmospheric weather variable?

• Soil composition

• Wind speed

• Ocean currents

• Mountain height

What is dew point temperature?

• The temperature at which water boils

• The temperature at which air becomes saturated with moisture and dew forms

• The temperature at which ice melts

• The temperature at which clouds form

In which temperature zone is the ozone layer primarily located?

• Troposphere

• Stratosphere

• Mesosphere

• Thermosphere

The ozone layer protects us from which form of electromagnetic energy?

• Infrared radiation

• Ultraviolet radiation

• Visible light

• Radio waves

Where did the early atmosphere most likely come from?

• Photosynthesis

• Volcanic eruptions

• Ocean evaporation

• Meteor impacts

Where could the water vapor in the early atmosphere have come from?

• Comet impacts

• Photosynthesis

• Volcanic outgassing

• Animal respiration

How did the composition of the early atmosphere differ from today?

• It had more oxygen and less carbon dioxide.

• It had more nitrogen and less oxygen.

• It had more carbon dioxide and less oxygen.

• It had more ozone and less nitrogen.

What is the primary component of today's atmosphere?

• Oxygen

• Carbon dioxide

• Nitrogen

• Argon

Which of the following best describes the role of the ozone layer?

• It traps heat from the sun to warm the Earth.

• It reflects sunlight to cool the Earth.

• It absorbs harmful ultraviolet radiation from the sun.

• It provides oxygen for living organisms.