How Messages Travel
This early form of communication used pictures and symbols on walls and stones.
Cave paintings
The process turns readable information into scrambled, unreadable information.
encryption
What does PEMDAS stand for
parenthesis, exponents, multiplication, division, addition, substitution.
Define vertebrates and invertebrates?
Animals that have a backbone are called vertebrates.
Animals that do not have a backbone are called invertebrates.
What animal is known for having eight legs: an insect or a spider?
Spider
This communication method used puffs in the air to send short messages like “danger.”
smoke signal
This cipher was named after a Roman general and works by shifting letters of the alphabet.
the Caesar cipher
Give a real life example that uses negative numbers
temperatures, debt, elevation
I have moist skin, am cold-blooded, and may begin life in water with gills. What am I?
Amphibian
What code uses dots and dashes to represent letters?
Morse code
how did the printing press make communication easier
The printing press allowed hundreds of identical materials to be produced much faster
Name another form of encryption besides caesar cipher
Morse code, reverse cipher, numbers to letters
What is the rule when multiplying same signs and multiplying different signs?
Same signs → positive
Different signs → negative
I lay leathery eggs. What am I?
Reptile
What is the largest animal on Earth?
Blue whale
This invention allowed people to send messages over long distances using electrical signals
telegraph/telegram
In a Caesar Cipher with a shift of 3, what does KHOOR decrypt to?
Hello
how is multiplication/division and addition/subtraction handled
left to right.
Aquatic mammals that are warm-blooded animals and live part or all of their lives in water are called?
mammals
Who plays spiderman in brand new day?
Tom holland
this technology made email widely accessible
The web/internet
A readable message before it is encrypted is called this.
plaintext
Solve 4 + 2 × (3² − 5). Must show work. No calculator.
→ 4 + 2 × (9 − 5)
→ 4 + 2 × 4
→ 4 + 8
→ 12
I have no backbone, eight arms, and a soft body. Am I a mammal, fish, reptile, amphibian, bird, or invertebrate?
Invertebrate
Name the site we used for online simulations
Phet interactive simulations