Energy in a catapult – Science

Hello welcome back to another blog post. In our most previous science lesson we started learning about energy to start off the term. Here is the link to my previous blog post explaining energy. Today we are learning about energy in a catapult which is a craft activity. It is a fun craft activity to do at home I definitely recommend doing it. Now lets get into it.

Aim: To make a catapult that uses elastic and kinetic energy.

Equipment:

  1. Popsicle sticks (8)
  2. Rubber bands (at least 5)
  3. Cotton balls ( if you do not have any available you can make a small ball by crumbling some paper)
  4. Small open area (One square meter will do. It should be a sturdy, flat surface such as a table or floor)
  5. Optional: Markers to decorate the popsicle stick

 

Thank you for listening to today’s blog post about energy in catapults. If you have any suggestions of what I could have done better or what I have done well in this blog post or the activity please let me know in the comments below. I hope you had a great time listening to this. Have a great day, see you in my next blog post, byee.

Energy

Hello welcome back to another blog post. Today in science we are learning about energy. I hope you get to learn lots about energy in today’s blog post. Lets get into it. 

What is energy?

Energy is the ability to do work. This means the ability to make something move against a force. Energy is not a physical thing, it is carried and passed from one object to another. 

It is measured in joules (J).

Renewable Energy

  • Sun
  • Water/ Hydro
  • Wind
  • Waves

Non – Renewable Energy

  • Oil
  • Coal
  • Gas

Where do we get energy from?

We get energy from the sun , all plants , and fossil fuels and food.

How does energy behave?

Energy cannot ever be used up , created or destroyed

Energy can be stored, transferred from objects, added to an object, taken away from an object, or changed into another form.

Energy comes in two forms. Potential energy: energy stored on an object – it is not yet active. Kinetic energy: energy of a moving object. Food energy is only released when it is eaten.

Energy changes

  • Making toast (electrical to heat)
  • Riding a bike (chemical to kinetic)
  • Wind farm (kinetic to electrical)

Now here are 3 examples that I can think of:

Kinetic energy:

  1. Sound energy
  2. Thermal energy
  3. Radiant energy

Potential energy:

  1. Elastic energy
  2. Gravitational potential energy
  3. Chemical energy

Thank you for listening to today’s blog post, I hope you enjoyed it. If you have anything I could have done better or any positive feedback please let me know in the comments. Have a great day, bye and i’ll see you in my next blog post.

The Colosseum – Social Studies

Hello welcome back to another blog post. Over the past week our class got to choose a man made structure and do Where, When, What, Why, How. I chose the Colosseum an amphitheater built in 80AD which is over a thousand years ago.

Fun Facts!

  1. It can hold up to 80,00 spectators
  2. The Colosseum wasn’t actually called the Colosseum at first it was called the Flavian Amphitheater
  3. It has 80 different entries
  4. Most of the spectators were women
  5. It is the biggest amphitheater

Reflection

What I enjoyed: I loved learning about the Colosseum and I learnt so many new things that I didn’t know about it before. What I found challenging: It was hard to research so much information I had to go pages through pages of Google finding websites for information.

Here is my presentation about the Colosseum:

Thank you for listening to this blog post. I hope you have a great holidays. Byee

Forensic Science – Dentistry

Hello welcome back to another blog post. Today I am going to be learning about dentistry. This is the last part to forensic science that I will be learning about. Lets get into it.

Dental forensics or the teeth can tell

Forensic dentists assist in crime solving by studying teeth and teeth impressions. Dental records are often used to identify people. Because teeth are one of the hardest substances in the human body, they are frequently well preserved. Dental x-rays or records show fillings, position of teeth, etc. It can help forensic dentists find a match of teeth to the individual. Eighty percent of the time teeth impressions are used to identify unknown victims.

Aim:

To analyse the impressions made by teeth.

Equipment:

  1. Styrofoam plate
  2. Scissors
  3. Pen

Steps: 

  1. Take the wedge of styrofoam plate and place it in your mouth between your teeth
  2. Bite down on the stryofoam
  3. Remove it from your mouth
  4. Label one side top and the other side bottom
  5. Study the teeth impressions

Findings

Count the number of teeth in the top and bottom impressions

Top teeth: There are six teeth impressions

Bottom teeth: There are 8 teeth impressions

What other characteristics of the impressions do you notice?

Characteristics: I see that all of the impressions are different sizes.

Compare the top teeth impressions to the bottom:

The two front teeth and two bottom teeth in the middle look pretty similar

Are there teeth missing, spaces or chips?

There are six teeth on the top and eight on the bottom on the stryofoam. So two on the top are not on the stryofoam.

Questions:

Q: How many teeth does an adult have?

A: 32 permanent teeth

Q: How many teeth does a child have?

A: 20 teeth

Q. Why are teeth used for forensic records?

A: To help identify a deceased person.

Q: What are 3 things that forensic dentists use teeth for?

A:   They use teeth for identification, bite mark injuries and age estimation

Q: When were dental records first used in crimes?

A: They were first used in 66 AD

That is it for today’s blog post I hope you enjoyed learning about dentistry as it is the last bit about forensic science, if you have any feedback please let me know in the comments, have a great day, byeee

 

Fingerprints

Hello welcome back to another blog. Today in Science we are learning about fingerprints and forensic science. Now let’s get into it.

Our unique fingerprints

There are 3 main types of fingerprints. These are:

  1. Whorl
  2. Arch
  3. Loop

Sorry about this being a very short blog post we didn’t get time to learn more about fingerprints but I hope you like everything about forensic science I have written about on my blog post, I hope you have a great day, byee

 

Forgery

Hello welcome back to another blog post today we are learning about Forgery, lets get into it.

Graphologist is a person who studies different handwriting styles.

The different kinds of letter styles have different characteristics.

Graphologists study:

  • The size of letters
  • The slope of letters
  • The dot on a ‘i’
  • The cross on a ‘t’

Aim: To analyse a signature using forensic science

Equipment:

  1. A pen/pencil
  2. Tracing paper
  3. Writing paper
  4. A ruler

There are 3 ways that handwriting is analyzed.

These are:

  • Top letter down
  • Bottom letter up
  • Slant

This is it for today’s blog post, I hope you enjoyed, byee!

The Scientific Method

Hello everyone welcome back to another one of my blog posts! This afternoon I am in Science with Mr Palmer. Today we are learning about the Scientific Method.

Aim: What do I want to find out about Science.

Hypothesis: What you already know. A statement of what you think will happen.

Equipment: The equipment used to do the experiment.

Method: The steps you went through as you did the experiment.

Findings: What have I found out while I did the experiment.

Summary:What the finding discovered.

Conclusion: Information about what you and other scientists have found out.

This was a short blog post for today, but thanks for listening byee!

 

Dance

Hello welcome back to another blog post. Today we are going to be writing my final blog post in Dance for the term. Let’s get into it.

Introducing the art of dance and dance in musical

Here is a link to my blog post introducing the art of dance (Toi haka) and dance in musicals.

CAT Musicals

Our most recent dance we have been learning about has been the CAT Musicals. We started off by looking at some CAT Musical videos and then we highlighted verbs in a poem called Mungojerrie and Rumpleteazer with a pair. We watched a musical about Mungojerrie and Rumpleteazer. Then we had part of a lesson where we watched funny cat videos and looked at how they moved. We have learnt movements of the cat in parts like their movements in hunting, playing, sleeping etc… Lastly, in our most recent lesson we watched this video of a pair of people practicing the steps for a CAT musical.

What I’ve learned this term

I have learned so many different movements and stretching exercises like different types of jumping, walking, side-stepping, and running. I also learnt things like crawling, sneaking, sleeping , hunting, chasing, leaping, grooming, and climbing like a cat. Early on in the term we also learnt more about the haka and some performances that are performing in New Zealand. ‘I had soo much fun!’

History of CATS musicals

The CATS musical first opened in London in May of 1981. It was composed by Andrew Lloyd Webber. The lyrics were drawn by T.S Eliot.  The CATS musicals is based off of a 1939 poetry collection called the Old Possum’s Book of Practical Cats and it is by  T.S. Eliot.

 Salsa

What is Salsa?

Salsa is a dance that is usually performed with a single partner. It is very vibrant and energetic. There are 6 different types of Salsa. These are New York style, LA style, Cuban style, Salsa Rueda, Colombian Salsa,and the Salsa Choke. It is one of the most popular dances worldwide. It is a very cheerful dance and is very easy to learn.

 

Where did Salsa dance originate from?

Salsa originated from Cuba and Puerto Rica.

 

Who made the Salsa dance?

 

 

When was it made?

 

Why is Salsa a dance?

 

 

 

 

Thank you for listening, see you in my next post, have a great day, byeee

The Case of the Barefoot Burglar

The case of the barefoot burglar

Hello! Welcome back to another blog post. Today we are learning about crime scenes and we will be looking into the Case of the Barefoot Burglar. Let’s get into it!

Here is the case file so you can try and work it out

After working it out writing down heights, fingerprint types, and any other information that could tie one of the suspects to the crime I have my results of who committed the crime.

Results

I think it is Dan the man because:

Evidence #1: His foot size is the closest to 10 1/2 inches (Which was found at the crime scene).

Evidence #2: His fingerprint matches the one found at the crime scene.

Evidence #3: He has protruding teeth that matches the mark in the chocolate bar.

Thank you for listening to this blog post, see you in my next post, have a great day, byeee

 

Forensic Science -Footprints

Hello welcome back to another blog post. Today in science we are going to be learning about footprints and how they are used in crime scenes. Let’s get into it.

Footprints

To determine the height of a criminal the feet can be used. 15% of a criminal’s height is the size of their feet.

Aim: To use forensic science techniques to measure the height of a criminal.

Material:

  1. Shoe
  2. Paper
  3. Pencil
  4. Scissors
  5. Glue stick

Steps

  1. Take off your left shoe
  2. Put it on a piece of paper
  3. Use a pencil and trace around your shoe
  4. Take off your shoe and put it back on
  5. Glue it to a piece of paper
  6. Get a ruler and measure it
  7. Go to a calculator on google
  8. Write your shoe length that you ruled before divided by .15 then press equals and you get your height

My height by dividing my shoe size (27 cm/mm)  by .15 is 180

Thank you for listening to this blog post, this is the last post for the year about forensic science, I hope you enjoyed learning about it, have a great day, byeee