The greenhouse effect
Grade 9 Science Worksheet - Building Confidence
Circle the best answer.
Read this first
Use this
Sunlight arrows in, and infrared arrows going up, back down and out to space.
What is the natural greenhouse effect, by Ari's reading (NASA)?
- Gases absorb heat from the ground and send some back down
- Gases store heat for good, so heat stops leaving Earth
- The ozone layer blocks most sunlight from reaching the ground
- Clouds reflect sunlight back down so each ray lands twice
About what is Earth's average surface temperature with the natural greenhouse effect, by Bo's reading (NASA)?
- About 100 °C
- About 15 °C
- About 5,500 °C
- About 0 °C
Which gases are transparent to outgoing thermal infrared, by Jun's reading (NASA)?
- Methane and water vapor
- Carbon dioxide and methane
- Oxygen and nitrogen
- Water vapor and carbon dioxide
Which list names three greenhouse gases, by Luz's reading (NASA)?
Use the picture in question 3.
- Nitrogen, oxygen and carbon dioxide
- Helium, neon and oxygen
- Water vapor, carbon dioxide and methane
- Oxygen, nitrogen and argon in the air
NASA names the atmosphere's most abundant greenhouse gas. Which is it, by Milo's reading?
Use the picture in question 3.
- Water vapor
- Nitrogen
- Methane
- Oxygen
Use this
Sunlight arrows in, and infrared arrows going up, back down and out to space.
Sunlight arrives mostly as visible and near-infrared light. What does Earth's surface give off, by Noah's reading (NASA)?
- Visible light, like the Sun gives off
- Thermal infrared (heat)
- Ultraviolet light, brighter than sunlight
- Nothing, since the ground just absorbs light
Why does Earth's surface give off infrared rather than visible light, by Pia's reading (NASA)?
- Its infrared is sunlight reflected off clouds
- Greenhouse gases paint the ground a darker color
- It is hotter than the surface of the Sun
- It is far cooler than the Sun, about 15 °C
Which energy do greenhouse gases mostly absorb, by Ren's reading (NASA)?
- Most visible sunlight, before it reaches land
- Radio waves arriving from space
- Outgoing thermal infrared from the surface
- Sound waves rising from the ground
Energy flows as a share of incoming sunlight (NASA)
Flow Share of incoming sunlight Reflected to space 29% Absorbed by the atmosphere 23% Absorbed by the surface 48% Infrared up from the surface 117% Infrared back down to the surface 100% Infrared from the surface straight to space 12% Infrared from the atmosphere to space 59% Using the table, what share of incoming sunlight does Earth's surface absorb, by Tala's reading (NASA)?
- About 23%
- About 29%
- About 117%
- About 48%
Using the table, what share of incoming sunlight is reflected and plays no part in warming, by Esme's reading (NASA)?
- About 48%
- About 29%
- About 100%
- About 71%