Science 5: Photosynthesis and Humans
Are you ready? We're finally going to reveal how humans can harness the power of photosynthesis for themselves. Groundbreaking stuff. Check it out in this video.
|Elementary and Middle School||5th Grade|
This is most certainly an example of others benefiting from your hard work. [Her little sister cries]
But you shouldn't be too mad at your siblings.
Because after all, you benefit from the hard work of others all the time.
And no, we're not talking about your mom and all of her cooking. [Girl eating her dinner]
Though…that's true too.
When this video is over, you should probably go thank her. [Mom smiles]
No, what we're actually talking about is how you benefit from the hard work of plants.
But when plants work hard to make their own food through the process of photosynthesis, [Light shining onto a tree]
we humans benefit as well.
The most obvious way we benefit from this process is that photosynthesis makes oxygen
that we then breathe.
And yeah, breathing is pretty important, but that's not what we're talking about today. [Girl deep breathing, then looks surprised]
So how else might we benefit?
Well, let's take a look at this plant.
Pretty cute, huh?
But not super useful to us, is it? [Tiny plant in the ground]
Well, hold onto your hats!
…and if you're not wearing a hat, go put on a hat!
Hats are cool!
Because here comes the sun, doo doo doo doo, kicking off the super-sweet [The sun in the sky]
process of photosynthesis.
And six weeks later...
Well look what we have here.
Not so tiny anymore, huh?
In fact, that plant is looking practically all grown up. [Mustache appears on the plant]
But is it useful to us yet?
Ehhh…not so much.
Let's check back in another six weeks.
And through a little movie magic… [Clock ticking]
Would you look at that?
It's been three months!
Time for the big reveal.
Now that's what we like to see. [Scary looking pumpkin]
The photosynthesis process produces food for the plant, which in turn allows the plant [Coop pointing at a blackboard]
And when plants grow big, they often produce things that we humans can benefit from.
Do you like fruit and veggies? [Picture of fruit and veg]
Well, then go high five a plant and say thanks! [Kid squishes a tomato]
They're pretty fragile.
Send them a card, or something.
And plants aren't just useful for the occasional juicy snack either.
Large portions of the human population depend on important crops to live, like rice and corn. [People farming]
And that's why it's important to make sure that our little plant buddies are growing
up to their fullest potential.
Plenty of people even study things like agricultural science to make sure that happens. [People in an agricultural science lab]
They examine how things like temperature, water, and amount of sunlight can affect all
rates of photosynthesis, and in turn, the amount of crops grown. [Guy up to his eyes in water]
The growth of food is something we often take for granted – especially when we live in
cities far away from any farmland.
But if it weren't for the magic of photosynthesis, well, our diets would probably look a whole [Kid looks grossed out by a broccoli bar]
lot less colorful.
Now get to work writing that thank you card! [Thank you card appears]