Acceleration

Last time we learned how kinematics is the study of measuring how things move.
We learned about distance, time and velocity.

There's another fun thing we can measure, called acceleration.

Imagine you are in a race car at the starting line.
As soon as the race starts you are going to speed up to go as fast as you can, until you cross the finish line.

How fast were you going right before the race started?
Your velocity was zero, (0 mph) because you weren't moving.

And by the time you crossed the finish line maybe you were going super fast,
so your velocity was 100 mph.

When we want to measure how fast you sped up, that's called acceleration.
We usually use the letter a for acceleration.

We're measuring how much velocity (v) changes over time (t).
Velocity is in miles per hour (mph) or meters per second (m/s).
Time is in hours (h) or seconds (s).

So m/s / s = m/s^2, meters per second per second or meters per second squared.

It might sound funny, but that's how we measure how fast we changed from one speed to another.


(from: wikipedia - acceleration)

Kangaroos

We just learned about the Spider Monkey.

Kangaroos are a type of animal known as a marsupial.

Marsupials carry their babies in a pouch. Baby kangaroos are known as joeys.

(from: wikipedia - kangaroo)

Mandible

We've now learned about all the parts of the neurocranium area of the cranium like the Temporal Bone.

Remember the other part of the cranium was the facial skeleton, also called the splanchocranium or viscerocranium.

There are several parts to that bone as well, such as the mandible.

The mandible is also known as your jawbone. It's the part of your skeleton that holds on to your teeth.

(from: wikipedia - mandible)

Peru and Ecuador

We just learned about the country of Chile and Bolivia.

Two more countries to learn about in South America: Peru and Ecuador.

Peru is on the Western coast of South America.
The largest river in the world, the Amazon River runs through the middle of this country.

(from: wikipedia - peru)

Ecuador is just North of Peru.
It has some old ruins from when the Incas lived there before the Spanish took over.

Also interesting about Ecuador is that they use the same type of money as the United States.
Most other countries have their own currency like pesos, reals or euros,
but Ecuador uses the US dollar as their money.


(from: wikipedia - ecuador)

Judges

Let's keep learning about the other Books of History in the Old Testament.

We already learned about Joshua.

Next up is Judges.

After Joshua dies at the beginnng of the book of Judges, the people of Israel start to disobey God.
So God sends them many different rulers over many years, to serve as Judges for his people.

Some of them are very famous, like:

Gideon - A great warrior for God who led only a few hundred men to battle and defeated thousands.

Samson - A warrior for God that was so strong he couldn't be defeated unless his hair was cut.
He once killed a lion with his bare hands!


(from: wikipedia - book of judges)

Meteorite

We now know that an asteroid is a big rock flying in space,
a meteoroid is a small chunk broken off of an asteroid
and a meteor is a chunk of that meteoroid that burns up in the sky when falling to a planet.

So what's a meteorite then?

If a meteor enters a planet's sky and doesn't burn up all the way,
sometimes it actually hits the planet.

When it actually hits the planet, it's called a meteorite!
Most meteorites are really small like a baseball and don't cause any damage, others are bigger than a car!

(from: wikipedia - meteorite)

French - Our table is short

We've now learned that This house is big is Cette maison est grande
The chair is small is La chaise est petit,
My drink is cold is Ma boisson est froide,
Your food is hot is Votre nourriture est chaud
and Their car is tall is Leur voiture est haut
.
To say Our table is short, you would say Notre table est courte.

Our - Notre - sounds like nuh-tuh-ah /?/
table - table - sounds like tah-bluh /?/
is - est - sounds like ay /?/
short - courte - sounds like coh-ut /?/

All together it sounds like nuh-tu-ah tah-bluh ay coh-ut /?/