Science Lesson Kit · Teacher Resource
The Greenhouse Effect: How Does Earth's Atmosphere Keep It Warm? — 5E Lesson Plan
Earth Science · 55 minutes
Grade 6
5E lesson flow
01
Engage
6 min
Teacher Does
Ask where heat goes when pavement cools after sunset.
Students Do
Suggest incoming and outgoing energy paths.
Ask
- Is there any energy leaving Earth at night?
Look For
Warm Earth emits infrared continuously.
02
Explain
11 min
Teacher Does
Distinguish sunlight, reflection and surface-emitted infrared.
Students Do
Add ray arrows to a scientifically qualified model.
Ask
- What is sunlight? What is thermal infrared?
Look For
Correct radiation direction.
03
Model gases
9 min
Teacher Does
Show greenhouse gases absorb and emit infrared in several directions.
Students Do
Compare more- and fewer-greenhouse-gas model scenarios.
Ask
- Does all energy stay trapped forever?
Look For
Some escapes; balance matters.
04
Investigate
10 min
Teacher Does
Guide student virtual energy-path model and data reasoning.
Students Do
Sort energy pathways and check claims with feedback.
Ask
- Why is a solid glass-roof image misleading?
Look For
Understand radiative mechanism.
05
Evaluate evidence
10 min
Teacher Does
Contrast brief weather events with long-term climate records.
Students Do
List one useful climate data request and one possible confounding factor.
Ask
- Is one short table enough to prove a cause?
Look For
Evidence needs comparison and mechanisms.
06
Independent assessment
9 min
Teacher Does
Provide independent fictional Climate Lab worksheet.
Students Do
Analyze new data, make and critique an arrow model.
Ask
- What evidence would strengthen a scientific claim?
Look For
Clear interpretation of new indexes and a question.
Student goal
I can explain solar versus infrared energy and use a model and evidence to describe greenhouse warming and its limits.
Learning objectives
- Use a model to distinguish incoming sunlight from infrared energy emitted by the warmed surface.
- Explain why greenhouse gases absorb and emit some outgoing infrared energy and how increasing their amount can warm Earth's surface.
- Analyze a simplified climate-energy data set to ask an evidence-based question, while recognizing that a model is not a literal glass roof around Earth.
Materials
- Infrared versus sunlight color cards
- Earth energy pathway diagram
- Fictional energy-model scenario cards
- Blank arrow models
- Independent climate index worksheet
Before class
- Do not use sealed bottles or glass domes as direct proof of atmospheric infrared absorption.
- Clearly label fictional classroom data as invented, not actual global observations.
- Introduce the difference between everyday weather and climate.
- Prepare a second data source showing cause requires more than a correlation.
Safety & supervision
Review these precautions before students begin the investigation. Follow your school's safety procedures.
- No heating apparatus, compressed gases or sealed glass containers are necessary.
- No direct Sun viewing or heat lamps.
- Use a paper model; it is not a measurement of real global temperature.
Prior knowledge
- Earth receives light energy from the Sun.
- Warm objects exchange energy.
- The atmosphere contains several different gases.
Vocabulary
- greenhouse effect
- Warming of Earth's surface and lower atmosphere because certain gases absorb and emit outgoing infrared energy.
- solar energy
- Energy arriving from the Sun, mostly as visible light and other shorter wavelengths.
- infrared radiation
- Energy emitted by warm objects, including Earth's surface, at longer wavelengths than visible light.
- greenhouse gas
- A gas, including water vapor, carbon dioxide or methane, that absorbs and emits infrared radiation.
- energy balance
- The balance between energy arriving at Earth and energy leaving the Earth system.
- carbon dioxide
- A gas present naturally in the air and added through activities such as fossil-fuel combustion.
- emission
- The release of energy as radiation.
- model
- A simplified representation of a system used to test or explain ideas.
Differentiation
- Provide color-coded incoming vs outgoing arrows.
- Offer sentence frames explaining absorption and emission.
- Make a two-column weather-versus-climate chart.
- Extension: discuss why bright ice reflects some incoming sunlight.
Assessment
- Identify sunlight versus infrared.
- Explain directionality of greenhouse gas emission.
- Evaluate model limits and fictional data.
- Write a question calling for real-world evidence.
Exit ticket
Why can adding greenhouse gases warm Earth even though infrared can still escape into space?
Extension
Compare NASA global CO₂ and temperature records with explanations of other possible climate drivers.