Reaction Control System

We just learned about Attitude Control.

We've learned about a lot of different sensors to help the rocket control it's attitude.
And we've learned about things like gimbaled thrust that can help change it's path.

Another way a rocket can change it's direction is by using a Reaction Control System, or RCS for short.

These are usually small rocket engine thrusters on the sides or front of the rocket, that can give little pushes left, right, front or back to help steer the rocket.


(from: wikipedia - reaction control system)


Kid Facts - Blast from the past: Strike Slip Fault

Pharaoh Cuttlefish

We just learned about the Humboldt Squid.

Another type of cephalopod is the Pharaoh Cuttlefish.

Sometimes the boys of these cephalopods will fight each other over a girl they like, but they won't touch each other, they just flash different patterns of colors.

It's almost like boys having a dance battle to win the girl cephalopod's heart!



(from: wikipedia - pharaoh cuttlefish)


Pharaoh Cuttlefish - Henry Hall

Kid Facts - Blast from the past: Vietnamese Mossy Frog

Tooth Impaction

We just learned about Dental Notation - Palmer.

We learned before that sometimes teeth don't show up in the right places.
When a tooth doesn't show up in the right place it is called an Impacted Tooth.

The tooth that gets impacted the most is the wisdom tooth.
Most of the time when a tooth is impacted it's because there wasn't enough room in the mouth for the tooth to come up, so it gets pushed off to the side or below, and can come out of the gums at the wrong place.


(from: wikipedia - tooth impaction)


Kid Facts - Blast from the past: Sharpey's Fibres

Buda Castle

We just learned about Himeji Castle in Japan.

Another ancient castle is Buda Castle, built in 1265 in Budapest, Hungary.

This is a big castle that has been the home of the kings of Hungary, and has been built and added onto for over 400 years.
There are many towers, cellars, chambers, museums, caves and famous works of art in this castle.

The castle area is over 1.8 square miles!




(from: wikipedia - buda castle)


Kid Facts - Blast from the past: Mexico States

Linus - bishop of Rome

We just learned about Asyncritus - Bishop of Hyrcania, one of the seventy disciples.

A few more of the seventy were listed that we don't know much about:

Phlegon - bishop of Marathon
Hermes - bishop of Dalmatia
Patrobulus - bishop of Puteoli
Hermas - bishop of Philippi

One of the ones we know a little more about is Linus - bishop of Rome.

The apostle Peter was known as the first leader of the Christian church after Jesus' death.
Linus took over after Peter, and Linus was known as the first Pope.


(from: wikipedia - pope linus)


Kid Facts - Blast from the past: Anthony the Great

He Zun

We just learned about the Phoenix Crown of Empress Xiadouanxian.

Another ancient Chinese sculpture is the He Zun.

This is a bronze sculpture made around 800 BC, and is the oldest ancient Chinese sculpture with the words "Middle Kingdom" or "Zhong Guo" meaning "China" on it.
It is a "Zun" sculpture, which is a kind of vase used to hold wine for pouring.

The sculpture is 15 inches tall, and weighs about 30 pounds.
There is writing on the inside in Chinese that talks about how the city of Louyang was built in China.

The He Zun was found by a local farmer who did not know what it was, so he sold it to a waste recycling center where someone would have melted the sculpture down for the bronze metal.

Luckily a historian saw it and rescued it, and then cleaned it up and put it in a museum.



(from: wikipedia - he zun)


Kid Facts - Blast from the past: Neptune - Coysvox

Greek - Counting to Seventy Nine

We counted to 69 in Greek, let's keep going!

70 εβδομήντα (evdomínta) - sounds like ay-doh-ME-n-tah
71 εβδομήντα ένα (evdomínta éna) - sounds like ay-doh-ME-n-tah AY-nah
72 εβδομήντα δύο (evdomínta dýo) - sounds like ay-doh-ME-n-tah DEE-y-oh
73 εβδομήντα τρεις (evdomínta treis) - sounds like ay-doh-ME-n-tah t-day-ss
74 εβδομήντα τέσσερις (evdomínta tésseris) - sounds like ay-doh-ME-n-tah TAY-say-dee-ss
75 εβδομήντα πέντε (evdomínta pénte) - sounds like ay-doh-ME-n-tah PAY-n-tay
76 εβδομήντα έξι (evdomínta éxi) - sounds like ay-doh-ME-n-tah AY-k-see
77 εβδομήντα επτά (evdomínta eptá) - sounds like ay-doh-ME-n-tah ay-p-TAH
78 εβδομήντα οκτώ (evdomínta októ) - sounds like ay-doh-ME-n-tah oh-k-TOH
79 εβδομήντα εννέα (evdomínta ennéa) - sounds like ay-doh-ME-n-tah eh-NEE-y-ah


(from: wikipedia - center for the greek language)

ASL: seventy, seventy one, seventy two, seventy three, seventy four, seventy five, seventy six, seventy seven, seventy eight, seventy nine

Italian: settanta, settantuno, settantadue, settantatre, settantaquattro, settantacinque, settantasei, settantasette, settantotto, settantanove

German: siebzig, einundsiebzig, zweiundsiebzig, dreiundsiebzig, vierundsiebzig, fünfundsiebzig, sechsundsiebzig, siebenundsiebzig, achtundsiebzig, neunundsiebzig

Spanish: setenta, setenta y uno, setenta y dos, setenta y tres, setenta y cuatro, setenta y cinco, setenta y seis, setenta y siete, setenta y ocho, setenta y nueve

French: soixante-dix, soixante et onze, soixante-douze, soixante-treize, soixante-quatorze, soixante-quinze, soixante-seize, soixante dix sept, soixante dix huit, soixante dix neuf