Science · 6th Grade · Weather and Climate · Weeks 28-36

Impacts and Solutions for Global Climate Change

An investigation into how human activity impacts the Earth's long term climate and potential solutions.

• Common Core State Standards
• MS-ESS3-5
• MS-ETS1-1

About This Topic

A two-degree Celsius rise in global average temperature may sound small, but scientists project significant consequences at that threshold: more frequent and intense heat waves, accelerated ice sheet loss, more severe droughts in some regions, heavier precipitation in others, rising sea levels threatening coastal communities, and substantial disruption to marine and terrestrial ecosystems. Understanding these projected impacts -- and what humanity can do about them -- is the applied side of climate science and ties directly to the engineering design standards in MS-ETS1-1.

Mitigation strategies range from reducing greenhouse gas emissions (transitioning to renewable energy, improving efficiency, electrifying transportation) to removing CO2 from the atmosphere (reforestation, direct air capture). Adaptation strategies -- building sea walls, developing drought-resistant crops, redesigning urban water systems -- accept some degree of change and focus on reducing harm. Most experts argue both approaches are necessary simultaneously.

The community carbon reduction design challenge is an ideal capstone because it requires students to gather information, evaluate trade-offs, and communicate a solution -- the full engineering design cycle. Real-world constraints like cost, political feasibility, and community acceptance make the problem authentic rather than hypothetical.

Key Questions

1. Analyze the potential consequences of a two-degree rise in global temperature.
2. Evaluate various strategies for mitigating climate change.
3. Design a plan for reducing carbon emissions in a local community.

Learning Objectives

• Analyze the projected consequences of a 2-degree Celsius global temperature increase on various Earth systems and human societies.
• Evaluate the effectiveness and feasibility of different strategies for mitigating and adapting to climate change.
• Design a detailed plan for reducing carbon emissions within a specific local community context.
• Compare and contrast the primary sources of greenhouse gas emissions in the United States.
• Explain the scientific basis for current climate change projections, including the role of human activities.

Before You Start

Earth's Systems and Cycles

Why: Students need a foundational understanding of how Earth's atmosphere, hydrosphere, and biosphere interact to understand climate dynamics.

Energy Sources and Transformations

Why: Understanding different energy sources, including fossil fuels and renewables, is crucial for analyzing greenhouse gas emissions and mitigation strategies.

Key Vocabulary

Greenhouse Gas	Gases in the atmosphere that trap heat, such as carbon dioxide and methane. Increased concentrations of these gases lead to a warming planet.
Mitigation	Actions taken to reduce the severity of climate change, primarily by decreasing greenhouse gas emissions or enhancing carbon sinks.
Adaptation	Adjustments in natural or human systems in response to actual or expected climatic stimuli or their effects, which moderates harm or exploits beneficial opportunities.
Carbon Footprint	The total amount of greenhouse gases produced by an individual, organization, event, or product, usually expressed in equivalent tons of carbon dioxide.
Sea Level Rise	An increase in the average global sea level, primarily caused by the thermal expansion of seawater as it warms and the melting of glaciers and ice sheets.

Watch Out for These Misconceptions

Common Misconception

Climate change is a future problem that does not affect people alive today.

What to Teach Instead

Current warming is already causing measurable harm: longer wildfire seasons in the western US, more intense Atlantic hurricanes, accelerating glacier retreat affecting freshwater supplies, and heat-related health impacts in urban areas. Students in sixth grade will live through the majority of projected 21st century changes.

Common Misconception

Individual actions like recycling are enough to solve climate change.

What to Teach Instead

Individual choices matter at the margins, but the scale of the problem requires systemic change: decarbonizing the electricity grid, reforming transportation systems, and changing industrial processes. Focusing only on individual behavior can actually obscure the need for policy and technological solutions operating at the necessary scale.

Common Misconception

There is one solution that will fix climate change.

What to Teach Instead

No single technology or policy can fully address climate change given the complexity and scale of global energy systems. Scientists and engineers project that a portfolio of solutions -- renewables, efficiency, electrification, land use change, and carbon removal -- will all be needed simultaneously.

Active Learning Ideas

Problem-Based Learning: Community Climate Action Plan

Present student groups with a fictional mid-size US city profile (population, energy mix, transportation patterns, geographic vulnerability). Each group must design a carbon reduction plan targeting a specific percentage reduction, selecting from a menu of realistic interventions with associated costs and emissions savings. Groups present their plans and respond to 'city council' questions from classmates.

60 min·Small Groups

Think-Pair-Share: Two Degrees -- So What?

Show students a world map of projected regional climate impacts at 1.5 and 2 degrees of warming. Ask: 'Which communities face the greatest risks, and why are those often the communities that contributed least to climate change?' Pairs discuss equity dimensions before sharing with the class.

20 min·Pairs

Gallery Walk: Mitigation Strategy Trade-offs

Post stations for six to eight mitigation strategies (solar, wind, nuclear, carbon capture, reforestation, efficiency standards). Each station includes a fact sheet with costs, land use, emissions reduction potential, and drawbacks. Students rate each strategy on a rubric and then vote as a 'policy committee' on which three to prioritize, justifying their choices in writing.

45 min·Small Groups

Real-World Connections

• Urban planners in coastal cities like Miami, Florida, are developing strategies to manage increased flood risks and potential displacement due to sea level rise, incorporating nature-based solutions like mangrove restoration.
• Engineers at renewable energy companies are designing and implementing solar farms and wind turbines to replace fossil fuel power plants, aiming to reduce the nation's carbon footprint and reliance on non-renewable resources.
• Agricultural scientists are researching and developing drought-resistant crop varieties for farmers in regions experiencing more frequent and severe dry spells, such as parts of the American Midwest.

Assessment Ideas

Quick Check

Present students with a list of 5-7 climate change impacts (e.g., increased heat waves, more intense storms, sea level rise, ocean acidification). Ask them to categorize each as either a direct consequence of warming or an indirect societal impact. Discuss their reasoning as a class.

Discussion Prompt

Pose the question: 'If a local factory proposes adding a new process that significantly increases carbon emissions but also creates 100 new jobs, how should our community weigh the economic benefits against the environmental costs?' Facilitate a structured debate where students must present arguments for both sides.

Exit Ticket

On an index card, have students write down one specific action they could personally take to reduce their carbon footprint at home or school. Then, ask them to identify one community-level action that would have a larger impact and explain why.

Frequently Asked Questions

What happens if global temperatures rise two degrees Celsius?

At two degrees of warming, scientists project significantly more frequent heat waves, accelerated melting of the Greenland and Antarctic ice sheets, sea level rise threatening hundreds of millions of coastal residents, more intense storms, widespread coral reef die-off, and disruptions to agricultural systems. The effects are not uniform -- tropical and polar regions face disproportionate impacts.

What is the difference between climate mitigation and adaptation?

Mitigation means reducing the causes of climate change -- primarily cutting greenhouse gas emissions or removing CO2 from the atmosphere. Adaptation means adjusting systems and communities to cope with changes that are already happening or projected to occur. Both are necessary: mitigation limits how bad things get; adaptation reduces harm from changes already underway.

What are the most effective ways to reduce carbon emissions?

The highest-impact strategies include transitioning electricity generation from fossil fuels to renewables, electrifying transportation and heating systems, improving building energy efficiency, reducing methane from agriculture and fossil fuel operations, and protecting forests. No single approach is sufficient -- substantial reductions require changes across all major emission sectors simultaneously.

How does the engineering design challenge support learning about climate solutions?

Designing a real community carbon plan forces students to move beyond abstract facts into genuine trade-off analysis: Which solutions are most cost-effective? Who bears the costs? Which interventions face political resistance? This mirrors the actual work of climate planners and engineers, and develops systems thinking, evidence-based argumentation, and iterative design skills that extend well beyond this topic.