What we think we know

[BetaGen]

I have this habit of watching at least 2-4 videos of TED talks. For those who haven't heard of it, it's a website which gathers videos from intellectual conferences where they spread ideas (mostly people who are really into a specific sphere). I wanted to ask your opinion on this video about knowledge. If you decide to watch the video, please try to answer his raised questions first:
1. A little seed weighs next to nothing but a tree weighs a lot. Where does all the stuff come from?
2. Can you light a little torch-bulb with a battery, a bulb and one piece of wire?
3. Why is it hotter in summer than winter?
4. What is the shape of the planets orbits in the solar system?
If anyone answers I will post the video to the speaker with answers. By the way, don't worry if you don't answer these questions, some MIT graduates couldn't do it

[Lopdo]

1. plants gather carbon from co2 and use it as building material, they get some other elements from soil
2. if their voltage is compatible then yes, just connect one contact of bulb with one contact of the battery and use wire to connect other two
3. Earth's axis is not perpendicular to its trajectory, thus light falls on earth under different angles, thus less light "energy" in winter, mode in summer
4. I am not sure what is exact purpose of this question and I am too lazy to open drawing software and upload image. All I know is that distances are not even, first 4 planets are much closer to the sun as the rest. Also if I remember correctly then most of the planets orbit in more or less same plane except one (saturn, uranus? not sure which one)

how did I do?

[BetaGen]

Good idea with the small font to avoid spoilers.
1 - correct most answers contain GROUND as the main source, not "Air". It shows how people react to the idea that Air contains gaseous material that can be converted to solid
2 - correct this is more about the practical adaptation. Most people know the circuit diagram, but can't do it in real life if they haven't played with a battery. Your instructions seem legit, you should be able to do it
3 - exactly the idea here was that in childhood, we learn that the closer you are the hotter the object is. In this case it would be false
4 - Close enough There's a catch with the orbit form. The so called ellipse is somewhat false. In the link he describes what he means

http://www.ted.com/talks/jonathan_drori_on_what_we_think_we_know.html

[techgump]

5. How to zoom in on a browser?

And TED talks are great.

[Lopdo]

dang, I didn't got 4 right because your question was wrong you missed most important word, shape

[Drone6o3]

TechGump just copy and paste the tiny text.

[BetaGen]

dang, I didn't got 4 right because your question was wrong you missed most important word, shape

Sorry for that, my bad. Fixed. I'm still interested whether you would say ellipses or circles