Evidence of Global Warming: Real-Life Examples and Data for 8th Grade

📚 Quick Study Guide

• 🌡️ Global warming refers to the long-term increase in Earth's average surface temperature.
• 🏭 Greenhouse gases, like carbon dioxide ($CO_2$), trap heat in the atmosphere.
• 🧊 Melting glaciers and ice sheets contribute to rising sea levels.
• 🌊 Rising sea levels threaten coastal communities and ecosystems.
• 🔥 Extreme weather events, such as heatwaves, droughts, and floods, are becoming more frequent and intense.
• 🌳 Deforestation reduces the planet's capacity to absorb $CO_2$.
• 📈 Data from ice cores, tree rings, and temperature records provide evidence of historical climate changes.

Practice Quiz

1. Which of the following is a primary greenhouse gas contributing to global warming?
   1. Oxygen ($O_2$)
   2. Nitrogen ($N_2$)
   3. Carbon Dioxide ($CO_2$)
   4. Argon (Ar)
2. What is one major consequence of melting glaciers and ice sheets?
   1. Decreased sea levels
   2. Increased sea levels
   3. Stabilized global temperatures
   4. More frequent snowfalls
3. Which of the following is an example of a real-life impact of global warming?
   1. Shorter growing seasons
   2. Decreased frequency of heatwaves
   3. Rising sea levels
   4. Expansion of polar ice caps
4. What role does deforestation play in global warming?
   1. It helps absorb more $CO_2$ from the atmosphere.
   2. It reduces the amount of $CO_2$ in the atmosphere.
   3. It increases the amount of $CO_2$ in the atmosphere.
   4. It has no impact on $CO_2$ levels.
5. Which of the following provides evidence of past climate changes?
   1. Modern social media posts
   2. Ice core data
   3. Newspaper articles from the 1950s
   4. Personal diaries
6. What type of extreme weather event is becoming more frequent due to global warming?
   1. Decreased rainfall
   2. More moderate temperatures
   3. More frequent droughts
   4. Less intense hurricanes
7. What happens when greenhouse gases increase in the atmosphere?
   1. Less heat is trapped.
   2. More heat escapes into space.
   3. More heat is trapped.
   4. The Earth cools down.