Expanding oceans

The video explains global warming, highlighting how rising temperatures cause ice to melt, leading to increased sea levels. Scientists initially miscalculated sea level rise due to not accounting for thermal expansion, where water expands as it heats. This expansion contributes significantly to sea level rise. The video stresses the importance of addressing global warming to prevent flooding in low-lying areas.

What is one of the primary causes of rising sea levels?

• Deforestation

• Increased rainfall

• Melting ice at the poles

• Volcanic eruptions

Why did scientists initially miscalculate the rise in sea levels?

• They underestimated the amount of ice melting

• They overestimated the impact of rainfall

• They did not consider thermal expansion of water

• They ignored the role of ocean currents

What happens to water molecules as temperatures increase?

• They evaporate completely

• They lose energy and become denser

• They gain heat energy and move apart

• They move closer together

What percentage of sea level rise is attributed to thermal expansion?

• 100%

• 75%

• 50%

• 25%

What is a potential consequence of continued sea level rise?

• More frequent earthquakes

• Serious flooding in low-lying areas

• Decreased global temperatures

• Increased agricultural productivity