Issue — April 2026

Quiz: Our Planet Earth

B1 Quiz 11 sentences

Quiz: Our Planet Earth 0 / 11

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Test your knowledge about Earth's oceans, continents, habitats, and the amazing variety of life on our planet.

Earth's Oceans and Atmosphere

Earth is often called the Blue Planet because oceans cover about 71% of its surface. These huge oceans hold most of the water on Earth. The atmosphere is the layer of gases that surrounds our planet and keeps us safe from harmful rays. The atmosphere also helps control the climate around the world.

Continents, Habitats, and Biodiversity

Earth has seven continents, and each one has a different terrain and climate. From icy poles to hot deserts, every region offers a unique habitat for many species. Forests, which cover about one-third of Earth's land, are home to thick vegetation and rich wildlife. Protecting biodiversity is one of the most important challenges of our time.

Quiz

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1Why is Earth sometimes called the Blue Planet?

Oceans cover about 71% of Earth's surface, which makes the planet look blue from space.
2What is the atmosphere?

The atmosphere is the layer of gases that surrounds our planet and protects us.
3How many continents does Earth have, according to the text?

The text states that Earth has seven continents, each with different terrain and climate.
4What does 'biodiversity' mean?

Biodiversity refers to the variety of plant and animal life found in a particular place.
5Which habitat covers about one-third of Earth's land?

The text says forests cover about one-third of Earth's land surface.

Must Know 9

atmosphere Noun The atmosphere is the mixture of gases that surrounds the Earth. It can also refer to the feeling or mood in a particular place or situation.
biodiversity Noun The variety of plant and animal life in a particular habitat or on Earth as a whole. It refers to the number of different species and the genetic variation within and between them.
climate Noun The long-term patterns of weather in a particular region or area over many years.
continent Noun A continent is one of the seven very large areas of land on the Earth, such as Europe, Asia, or Africa.
habitat Noun The natural environment in which a plant, animal, or other organism lives, grows, and reproduces.
species Noun A group of similar organisms that can breed together and produce fertile offspring, sharing common characteristics and a common ancestry.
surface Noun The outside part or top layer of something, or an outer side of a place or object.
terrain Noun Terrain refers to the natural features of an area of land, including its elevation, slope, vegetation, and surface composition. It describes the physical geography of a place, such as mountains, valleys, plains, or forests.
vegetation Noun Plant life or the collection of plants, trees, and shrubs that grow in a particular area.