Greenhouse effect and greenhouse gases

Greenhouse effect and greenhouse gases

Multiple Choice

Which of the following greenhouse gases has the highest global warming potential and is mostly associated with refrigerants and aerosol chemicals?

• carbon dioxide CO₂

• water vapor H₂O

• methane CH₄

• chlorofluorocarbons (CFCs)

Multiple Select

Which image correctly depicts the greenhouse effect in Earth’s atmosphere, and why?

• Image A, because visible sunlight enters Earth’s atmosphere without being blocked by greenhouse gases.

• Image A, because greenhouse gases block heat from leaving Earth’s atmosphere.

• Image B, heat leaves Earth’s atmosphere without being blocked by greenhouse gases.

• Image B, because greenhouse gases trap visible sunlight as it enters Earth’s atmosphere.

Multiple Select

Which of the following are environmental problems most directly associated with atmospheric warming?

• shoreline erosion

• melting permafrost

• growing ice sheets

• stronger earthquakes

Multiple Choice

Which of the following greenhouse gases is the most abundant in Earth’s atmosphere and tends to have the shortest atmospheric lifetime?

• CFCs

• water vapor (H₂o)

• methane (CH₄)

• carbon dioxide (CO₂)

Multiple Choice

Which image best represents an atmosphere in which Earth is experiencing global cooling, and why?

• Image X, because a relatively high concentration of greenhouse gases blocks more visible sunlight.

• Image X, because a higher concentration of greenhouse gases absorbs more heat than image Y.

• Image Y, because a lower concentration of greenhouse gases than Image X blocks less visible sunlight.

• Image Y, because a lower concentration of greenhouse gases absorbs less heat than Image X.