Climate Change and Its Effects

The video explores paleo climate, the study of past climates, using proxy data like tree rings and ice cores. It explains how these proxies help reconstruct climate history and highlights the famous hockey stick graph. The video discusses glacial and interglacial cycles, their causes, and feedback mechanisms like CO2 and ice albedo. It emphasizes the unprecedented speed of current climate change due to human activities.

What is the primary focus of paleo climate studies?

• Extraterrestrial climates

• Past climate conditions

• Current climate conditions

• Future climate predictions

Which data set is used as a proxy for climate data over the last couple of thousand years?

• Volcanic activity

• Ocean currents

• Tree ring data

• Satellite data

What significant climate event allowed the Inuit to spread eastward through northern Canada?

• The Renaissance

• The Little Ice Age

• The Medieval Warm Period

• The Industrial Revolution

What was the impact of the Little Ice Age on the Norse settlements?

• Expansion of settlements

• Technological advancements

• Collapse of settlements

• Increased trade

What do ice cores reveal about Earth's past climate?

• Future climate trends

• Current weather patterns

• Past atmospheric conditions

• Extraterrestrial climates

What are the warm periods between glacial cycles called?

• Cold Spells

• Ice Ages

• Interglacials

• Glacials

What triggers the glacial and interglacial cycles?

• Volcanic eruptions

• Changes in Earth's orbit and tilt

• Human activities

• Solar flares

What is the effect of increased CO2 levels in the atmosphere?

• Cooling of the Earth

• No effect on climate

• Increased greenhouse effect

• Decreased greenhouse effect

How does the ice albedo feedback affect Earth's temperature?

• Increases Earth's temperature

• Decreases Earth's temperature

• Has no effect on temperature

• Only affects ocean temperatures

What is the current impact of anthropogenic greenhouse gas emissions?

• Warming Earth's climate

• Stabilizing Earth's climate

• Cooling Earth's climate

• No impact on Earth's climate