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- Q1
What is the main difference between conductors and insulators?
Conductors have a neutral charge and insulators have a negative charge.
Electrical currents move through insulators better than conductors.
Insulators are positively charged and conductors are negatively charged.
Electrical currents move through conductors better than insulators.
60sS5P2c - Q2
The temperature outside has been below 32F for a few days. What is likely true about bodies of water nearby?
The water will have boiled off from overheating.
They are frying up from too much evaporation.
Lakes and ponds will have turned to snow.
Smaller lakes and ponds will have a layer of ice on the top.
60sS5P1b - Q3
Scientist look through a microscope and take an initial count of 250 cells. After two hours, a second count is taken, and 450 cells are counted.
What can the scientists most likely conclude?
The cells have moved from another part of the cell.
The cells have divided to create more cells.
The cells are swollen from taking in nutrients.
The cells have divided to get bigger in size.
120sS5L3a - Q4
What is the function of the cell membrane?
producing a jellylike substance
holding the cell together
releasing energy
controlling everything the cell does
60sS5L3b - Q5
Electrical energy is the flow of electrons. What do you need to allow a continuous flow of electrons?
series circuit
closed circuit
parallel circuit
open circuit
60sS5P2b - Q6
Some materials do not readily allow electrons to pass through them. What are these materials called?
conductors
fuses
transformers
insulators
60sS5P2c - Q7
Which of these substances would be best to use for conducting electricity in a circuit?
rope
plastic
copper
wood
60sS5P2c - Q8
What happens to liquid water if it cools to 0 Degrees Celsius?
It will freeze and change to a solid.
It will only get a little cooler.
It will only get a little warmer.
It will boil and change to a gas.
60sS5P1b