The Warming of the Earth - How Do We Know?

The video discusses various methods of measuring climate change, such as thermometers placed in different environments. It highlights the shrinking of ice and glaciers, and the impact of warming on plants and animals. The distinction between weather and climate is explained, noting that short-term weather events do not negate long-term warming trends. Natural phenomena like La Nina and volcanic eruptions can temporarily affect climate. Long-term data, typically averaged over 30 years, consistently shows a warming trend.

Which of the following environments are used to measure Earth's temperature?

• Urban and rural areas

• Mountains and valleys

• Ground, ocean, and space

• Deserts and rainforests

What is happening to most of the glaciers on the planet?

• They remain unchanged

• They are shrinking, even with more snow

• They are melting only in summer

• They are expanding rapidly

How are critters and plants responding to climate change?

• By moving to warmer areas

• By moving to colder places and seasons

• By staying in the same location

• By becoming extinct

What can cause temporary cooling of the Earth's climate?

• Deforestation

• Increased solar activity

• Greenhouse gas emissions

• La Nina and volcanic eruptions

Why is a 30-year average used to study climate trends?

• To smooth out short-term weather variations

• To account for daily weather changes

• To focus on seasonal changes

• To ignore extreme weather events