Investigation 1
I am an ancient device using the Earth's magnetic fields to point to the North Pole.
What is a compass?
True or False - adding more coils to a core will increase the strength of an electromagnet.
What is true?
A piece of iron becomes a temporary magnet when electricity flows through coils of insulated wires wrapped around it.
What is an electromagnet?
The branch of government that makes the laws.
What is the legislative branch?
True or False—Even if you place a compass with a D-cell battery and make an electromagnetic, it will still face toward the North Pole.
What is false? (The compass needle will move towards the magnetic force)
Adding more winds of coils to a core does this to an electromagnet.
What is, make it stronger?
The telephone was an improvement over the telegraph because it allowed this.
What is "the ability to send more than one message at a time?"
A set of signals or symbols that communicate.
What is a code?
The capital of the United States.
What is Washington, DC?
This metal, and its alloy cousin steel, is the only metal that can be magnetized.
What is iron?
A core in an electromagnet can only be made out of this material.
What is iron?
Adding a second D-cell battery will do this to your telegraph system.
What is, make it stronger or make it travel further?
In an electromagnet, the material around which a coil of insulated wire is wound.
What is the core?
I am an idea that is formally introduced before Congress. I can also sing a catchy tune.
What is a bill?
Thicker wires will do this to a doorbell.
What is, make it stronger?
This scientist developed a code to allow people to communicate over the telegram.
Who is Samuel Morse?
Quick back-and-forth movements.
What are vibrations?
We are nine in total with lifetime appointments. We interpret laws to determine if they follow the US Constitution.
What is the US Supreme Court?
These three factors will make your doorbell louder (and yes, you need all three)
What are the number of winds on the wire, the distance from the striker to the electromagnet, and the thickness of the wire?
True or false - the telegraph was instrumental in communication technology for the Union Army during the American Civil War.
What is true?
A device that uses an electromagnet to send coded messages by closing and opening an electric circuit.
What is a telegraph?
I am the governor of New Jersey
Who is Phil Murphy?