Ezekiel

Like Isaiah and Jeremiah, another prophet Ezekiel
also told people God's warnings about their coming exile and destruction.

During his life the Babylonian army came and took over their land
and kicked God's people out of their country!

He later told people about some day in the future when God would save them
and bring them back to their home land.

(from: wikipedia - ezekiel)

Star absolute magnitude

We just learned that when scientists want to measure how hot a star is,
they use something called stellar classification.

Another thing they measure for stars is how bright they are.
They call this absolute magnitude.

We can't just measure how bright stars look to us in our sky,
because some are close (like our sun) and some are very very far away.

So we measure how bright a star would be if we were looking at it from 32.6 light years away.

They go from -15 which is very very bright, to 20 which is not very bright at all.
Our sun has an absolute magnitude of 5, so it's about in the middle of the brightness levels.

(from: wikipedia - stellar classification)

French - Counting to twenty nine

We just learned how to count to 20 in French, let's keep going!

21 vingt et un - sounds like vah-n-tay-un /?/
22 vingt-deux - sounds like vah-n-doo /?/
23 vingt-trois - sounds like vah-n-twah /?/
24 vingt-quatre - sounds like vah-n-cah-tuh-ah /?/
25 vingt-cinc - sounds like vah-n-sunk /?/
26 vingt-six - sounds like vah-n-see /?/
27 vingt-sept - sounds like vah-n-set /?/
28 vingt-huit - sounds like vah-n-oo-ee /?/
29 vingt-neuf - sounds like vah-n-nef /?/

Notice that for 22-29, it's always the word for 20 vingt (vah-n)
and then the word for the number by itself.

So 25 is 20 vingt (vah-n) and 5 cinc (sunk)
so it's vingt-cinc (vah-n-sunk).

It's pretty much the same way for all the numbers up to 79!

Superconductor

We've learned that if something is kind of a good conductor but not really good,
we call it a semiconductor.

What about something that's a really super awesome conductor?

That's called a superconductor!

Superconductors don't work like good conductors or semiconductors do,
they're usually something normal like metal, but made really super freezing cold.

Not cold like when you go sledding in the snow, (about -10 degrees fahrenheit)
but so cold that you couldn't survive outside. (-300 degrees!).
Colder even than Antarctica, the coldest place in the world!

When the superconducting metal is that cold, it pushes out a magnetic field
that is so strong it can even push other magnets up off the ground!

(from: wikipedia - superconductivity)

Hippo Sunscreen

We just learned about how frogs breathe with their cheeks

Hippos live in the hot Southern part of the African continent.

With all that sun out there, they've got to keep from getting a sunburn,
and their bodies have a pretty cool way to do it.

From underneath a hippo's skin comes a type of gooey stuff called mucus,
and it comes out through their skin like sweat.

It's red colored, and it looks like sweat, so people sometimes call it blood sweat,
but it's really two kinds of acid that mix together in the hippo's body
and then come out through their skin like sweat.

This red gooey mucus acid stuff (called hipposudoric and norhipposudoric acid)
is the hippo's natural sunscreen!

It turns hard and it stays on their body even if they go in and out of the water.

(from: wikipedia - hippopotamus)

Wouldn't it be great if our body could make it's own sunscreen?

Pectorals

Let's keep learning about the muscles in the human body!

Last time we learned about the deltoids

Next up is the pectorals.

The pectorals, which are sometimes just called pecs
are used when you do pushups, when you clap your hands together, or flap your arms like wings.


(from: wikipedia - pectoralis major muscle)

Sweden

Let's keep learning about the countries in Europe!

Last time we learned about Norway,
and how Norway, Denmark and Sweden are all Scandinavian countries.
Sweden is also part of the Scandinavian Peninsula.


(from: wikipedia - sweden)

Swedish inventor Alfred Nobel invented dynamite, and started the Nobel peace prizes.

(from: wikipedia - alfred nobel)

Every year Sweden builds a hotel made of ice, big enough for 100 people.

(from: wikipedia - tourism in sweden)

The type of meal where you have a table full of food to choose from
is very often called a smorgasbord, which comes from the Swedish word Smörgåsbord.

(from: wikipedia - smörgåsbord