We Build It Better: Kit 5 Pre-Assessment

Name three everyday devices that are a result from combining an early invention with a new power source, such as electricity.

• lamp
• oil lamp
• refrigerator
• ice box

What is static electricity?

• a small electrical shock caused when charged particles moves from one body to another
• is an electric current that is one-directional
• is an electric current that reverses its direction many times a second at regular intervals
• is where the negative charges within matter flow through the positive charges

Nikola Tesla developed a way of generating electricity known as the alternating current. What is an alternating current?

• a small electrical shock caused when charged particles moves from one body to another
• is an electric current that is one-directional
• is an electric current that reverses its direction many times a second at regular intervals
• is where the negative charges within matter flow through the positive charges

What is a direct current typically used in?

• appliances
• wall sockets
• batteries
• mobile phones

Look at the picture below. Would this be considered a complete circuit? Why or why not?

(a)  

What tool would you use to measure the voltage in batteries?

• power source
• fiber optics
• breadboard
• multimeter

In the world today we use both alternating and direct current. Check all the boxes below that would be powered by direct current.

• computers
• LEDs
• solar cells
• electrical vehicle

What are the basic components of an electrical circuit? Check all that apply.

• pathway
• power source
• load

Look at the breadboard circuit, what needs to be done in order to make the light bulb glow?

• power the board
• connect a jumper cable
• add a resistor to the board
• check the voltage of the batteries

Why are needle nose pliers well-suited to precision work?

• They fit easily in your hands.
• They are small and compact
• They are great for grasping small or thin objects
• They are tools that are easy to use.