Height
Questions
1. How tall are you?
2. Who is the tallest person in your family?
3. Are people generally tall in your country?
4. What is an advantage of being tall?
5. What is an disadvantage of being tall?
6. Would you like to be taller or shorter?
7. Is height important for a partner?
8. What is the ideal height for a man? How about for a woman?
9. Do you have a fear of heights?
Videos
What makes a tree grow tall? And do trees ever stop growing? Explore how photosynthesis and gravity can affect and limit the height of trees.
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Reaching heights of over 100 meters, Californian sequoias tower over Earth’s other 60,000 tree species. But even these behemoths seem to have their limits: no sequoia on record has been able to grow taller than 130 meters. So what exactly is stopping these trees from growing taller, forever? Valentin Hammoudi investigates why trees have limited heights.
Lesson by Valentin Hammoudi, directed by Doug Alberts.
Lesson by Valentin Hammoudi, directed by Doug Alberts.
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Category: Nature & Environment | Science
If you doubled in size, your weight would be eight times greater. That’s the trouble with growing tall. Gravity’s pull is keeping us all down. But there are a few earthly giants that have fought gravity and won.
Category: Nature & Environment | Science