Miss Lebo Terrestrial Biomes 10 th Grade Biology

1. Miss LeboTerrestrial Biomes10th Grade Biology Click to Continue

2. Click on a biome to learn more about it! SavannaDesertNorthern coniferous forestTundra Tropical forestTemperate broadleaf forestChaparralTemperate grassland Review Question

3. Savanna • Distribution: Equatorial and subequatorial regions • Precipitation: Rainfall is seasonal and averages 30-50 cm per year. The dry season can last up to eight or nine months. • Temperature: The savanna is warm year round, averaging 24-29°C, but with somewhat more seasonal variation than in tropical forests. • Plants: Trees are scattered and found at different densities. They are often thorny and have small leaves to adapt to the dry conditions. Return to Main Menu

4. Desert • Distribution: Deserts occur in bands near 30° north and south latitude or at other latitudes in the interior of continents. • Precipitation: Precipitation is low and highly variable, generally less than 30 cm per year. • Temperature: Temperature is variable seasonally and daily. Maximum air temperature in hot deserts may exceed 50°C. In cold deserts air temperature may fall below -30°C. • Plants: Desert landscapes are dominated by low, widely scattered vegetation. Return to Main Menu

5. Northern Coniferous Forest • Distribution: Extends in a broad band across northern North America and Eurasia to the edge of the arctic tundra. It is the largest terrestrial biome on Earth. • Precipitation: Annual Precipitation generally ranges from 30 to 70 cm, and periodic droughts are common. • Temperature: Winters are usually cold and summers may be hot. Some areas of coniferous forest in Siberia typically range in temperature from -50°C in winter to over 20°C in summer. • Plants: Cone-bearing trees such as pine, spruce, fir, and hemlock dominate northern coniferous forests. Return to Main Menu

6. Tundra • Distribution: Tundra covers expansive areas of the Arctic, amounting to 20% of Earth’s land surface. • Precipitation: Precipitation averages from 20 to 60 cm annually in arctic tundra. • Temperature: Winters are cold, with averages in some areas below -30°C. Summer temperatures generally average less than 10°C. • Plants: The vegetation of tundra is mostly herbaceous, consisting of a mixture of mosses, grasses, and forbs. A permanently frozen layer of soil called permafrost restricts the growth of plant roots. Return to Main Menu

7. Tropical Forest • Distribution: Equatorial and subequatorial regions • Precipitation: In tropical rain forests, rainfall is relatively constant, about 200-400 cm annually. • Temperature: High year round, averaging 25-29°C with little seasonal variation. • Plants: Tropical forests are vertically layered, and competition for light is intense. Return to Main Menu

8. Temperate Broadleaf Forest • Distribution: Found mainly at midlatitudes in the Northern Hemisphere. • Precipitation: Precipitation can average from about 70 to over 200 cm annually. • Temperature: Winter temperatures average around 0°C. Summers are hot and humid with maximum temperatures near 35°C. • Plants: Temperate broadleaf forests have distinct vertical layers, including a closed canopy, one or two strata of understory trees, a shrub layer, and an herb layer. Return to Main Menu

9. Chaparral • Distribution: Chaparral occur in midlatitudecoastal regions on several continents. • Precipitation: Precipitation is highly seasonal, with rainy winters and dry summers. Annual precipitation generally falls within the range of 30-50 cm. • Temperature: Fall, winter, and spring are cool, with average temperatures in the range of 10-12°C. Average summer temperatures can reach 30°C and daytime maximum temperatures can exceed 40°C. • Plants: Chaparral is dominated by shrubs and small trees, along with many kinds of grasses and herbs. Plant diversity is high. Return to Main Menu

10. Temperate Grassland • Distribution: The veldts of South Africa, the puszta of Hungary, the pampas of Argentina and Uruguay, the steppes of Russia, and the plains and prairies of central North America. • Precipitation: Annual precipitation generally averages between 30 and 100 cm. Periodic drought is common. • Temperature: Winters are generally cold, with average temperatures frequently falling well below -10°C. Summers are hot, with average temperatures of 10°C. • Plants: The dominant plants are grasses and forbs. Many grassland plants have adaptations that help them survive periodic droughts and fire. Return to Main Menu

11. Review Question:What is the largest terrestrial biome? • Temperate Broadleaf Forest • Temperate Grassland • Northern Coniferous Forest

12. Nice try! Temperate broadleaf forests are found mainly in the Northern Hemisphere. There is another biome even larger than this. Go back and try again! Back to Question

13. Good Try! Temperate grasslands are found all over the world, however there is a terrestrial biome larger than this. Go back and try again! Back to Question

14. That is correct! Great work! Northern coniferous forest is the largest terrestrial biome on Earth! Continue

15. Congratulations! You have completed this lesson on terrestrial biomes! Please click on the image below to return to the title slide for the next student. Return to Title Slide