Random
Can you have more than one light bulb in a circuit?
Are they always going to be closed circuits? What could make them open circuits?
Yes
No, switches, gaps, or buttons
When mixing corn syrup, vegetable oil, and water together in a clear cup, what would you see? Why?
The top: Vegetable oil - less dense
The middle: Water - more dense than vegetable oil, less dense than corn syrup.
The bottom: Corn Syrup - More Dense
What kind of energy is being used to operate a pinwheel?
Mechanical Energy
What would be the fastest way to separate a mixture of rocks and water?
A filter
What is an open circuit?
No electrical energy can flow.
Yes! The bell can be powered by electrical energy.
What material would be best to insulate electrical wires?
Plastic
What kind of energy is being used when a bell rings at school? What energy is being produced when the bell rings?
Electrical Energy is being used to power the bell and produce sound energy.
Marcel poured sand into a cup of water. At first, the water was very cloudy. Marcel let the water sit for a while and then came back and looked at it. He noticed that the sand had settled at the bottom of the glass and the water was clear again. What happened to the sand?
It did not experience a physical change. It sank to the bottom. The sand was more dense than the water. It did not create a solution. The sand was still solid.
What is a closed circuit?
Closed = It Flows
Electrical energy is able to flow through this circuit.
Antonio is sampling different materials to uncover what kind of matter they are considered to be. He is looking at 3 items:
Sample A: Takes the shape of its container and has the ability to flow.
Sample B: Has a definite shape and size
Sample C: Expands to take the shape of its container but can escape when the container is opened.
What kinds of matter are samples A, B, and C?
A: Liquid
B: Solid
C: Gas
Adrian mixed salt with water. What changes and stays the same in this solution?
The salt expands and gets bigger in size.
The saltwater still tastes like salt and water. There is no change in taste.
What kind of energy is used by a lamp to produce light?
Electrical Energy.
If you combine fruits in a bowl with powdered sugar and then put the mixture in the fridge, what will happen to the powdered sugar?
It will dissolve in the moisture of the fruit.
What materials are needed to create a closed circuit?
Wires, Lightbulb, and a battery.
Kevin found something that conducts electricity and heat, is not soluble, and is a solid, what kind of material could we have?
A metal
Katherine wants to buy a drink. What kind of cup should she choose if she wants her drink to stay cold the longest?
A. Plastic
B. Paper
C. Styrofoam
C. Styrofoam
Styrofoam is the better insulator. It will keep the drink colder for longer.
What kinds of energy do we see from a lamp?
Thermal, Light and Electrical Energy
True or False:
In a mixture, all of the physical properties of the ingredients are maintained? (They stay the same as before)
True
Imagine a circuit that has a lightbulb, a switch, copper wires, and a battery to be powered.
If we remove the battery, will electricity be able to flow and light up the bulb??
No, there is no source of power.