23/02/2018 Newsround

Hi, I'm Ricky and this

is your Friday morning Newsround.

Keep watching for all this...

How science makes

fireworks go with a bang.

Plus the coolest ride to

the bus stop ever...

First, some of the world's most

endangered animals including

leopards, wild bore,

chimps and golden cats have been

captured on camera in Nigeria.

Take a look at these...

Caught on camera in the remote

forests of Nigeria's largest

national park. Red river hogs. The

Golden cat. This is home sue some of

Africa's most endangered animals.

Conservationists are using hidden

cameras to monitor them.

You go

through a lot of camera images and

it can be quite a tedious process. A

leaf blowing in the wind and you

don't see a great deal and then you

will get a gem like a Golden cat.

Perfect shot and you are handling

and you were not sure they were on

site and there it is in detail.

Chester zoo researchers are working

with local park rangers to help

protect wildlife. This park is home

to a rare breed of chimp found only

in Nigeria and Cameroon next door.

With just a few thousand left in the

wild, these pictures raise hopes the

great ape can avoid extinction.

Over at the Winter Olympics

a 15-year-old figure

skater has won gold.

Alina Zagitova topped the scoreboard

with this performance,

narrowly beating her Russian team

mate to take the top prize.

It's the first gold won

by Olympic Athletes from Russia

at the games so far.

Next to curling and Great Britain's

women have a massive

game this morning.

They knocked out defending champions

Canada a couple of days ago,

and today take on Sweden

in the semis.

If Eve Muirhead and her team can

win, they'll go for gold on Sunday!

We are open to any team. We had a

very close game against Sweden in

the round robin. We defeated them in

the European final and we have close

games when it comes to the play-offs

against them.

We will go away and

regroup for the semifinals and come

back as strong as we can.

Well

excited about that.

Dr Tom has the answer

to an explosive question ?

how are fireworks made?

Dr Tom is an expert,

so please do not try this at home.

Hello, I am Dr Tom,

a fireworks expert.

I am here to answer the big question

this week, which is from

Rees in Cambridgeshire

and it is how fireworks made?

A firework is a lot of different

chemical reactions.

To make colours we add metal salt

to the firework mix.

So strontium salt to get red.

This to get green.

Sodium salts to get yellow.

And to get blue, the

most difficult colour

of the lot, you add

copper salt to the mix.

What you packed into the fireworks

to make it effective are

called stars.

This is a star.

This will burn the violet

and in the middle it changes

the composition and burns

with silver sparks.

About the size of

a pea and hundreds of

them are in a firework shell.

Black powder or gunpowder

as some call it

is one of the key ingredients.

It has two purposes.

Sometimes to produce

gold sparks of long

duration flowing down

to the

ground and making it look pretty

but more often as a propellant

to shoot a shell into the sky

or to motor a rocket.

Firework sounds like

whistles and screeches are

made from different

types of chemistry.

We press a tiny band of this

composition into the bottom of

the tube and in the rest of the tube

it acts like an organ pipe to

amplify the sound and make

a really loud sound.

This is a firework mortar.

It is what is used to fire

the fireworks into the air.

We have hundreds and

hundreds of these added

together and the shell goes in here.

The bottom part is for the black

powder to propel the shell into the

air and the top part

is full of the stars

making the big burst of

colour in the sky.

Kids at a school in Norfolk have

been told they are not allowed

certain hairstyles. Extreme haircuts

like this one are deemed

unacceptable. The headmaster sent a

letter to parents saying students

not following the rules could be

sent home or excluded.

We want to hear YOUR

views on this one.

Get online and join

in with the vote.

Finally, more news from Pyeongchang,

but not from the snow and ice.

Take a look at how this guy makes

his daily journey to the bus stop.

This is Team GB snowboarder

Billy Morgan making his way

from the Olympic Village

to the slopes in pretty

impressive style.

Team mate Jamie Nicholls caught him

on camera as he pulled tricks

on his scooter on his way

to the athletes bus.

He goes in the final

of the Big Air tomorrow.

With balance like that

he's sure to win gold!

That's it for now.