Why is glass a good insulator?
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1 point
The atoms in glass hold on tightly to their negatively charged particles.
The atoms in glass hold on tightly to their positively charged particles.
The atoms in glass do not hold on tightly to their negatively charged p
articles.
Why is glass a good insulator?
A)The atoms in glass hold on tightly to their negatively charged particles.
B)The atoms in glass hold on tightly to their positively charged particles.
C)The atoms in glass do not hold on tightly to their negatively charged p
articles.
The correct answer is C) The atoms in glass do not hold on tightly to their negatively charged particles.
Glass is a non-conductive material and therefore, it is a good insulator. The electrons in glass are tightly bound to their respective atoms, which inhibits their movement and restricts the flow of electric current.
Which statement describes a difference between insulators and conductors?
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1 point
Insulators have high resistance, while conductors have low resistance.
Insulators can transmit electric current, while conductors cannot.
Insulators have high conductivity, while conductors have low conductivity.
Insulators have high resistance, while conductors have low resistance is the statement that describes a difference between insulators and conductors.
Which energy transformation happens when a toaster is plugged in to an outlet in the wall and used to make toast?
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1 point
Electrical energy from the outlet is converted completely to heat energy for the toaster.
Electrical energy from the outlet is converted to heat and chemical energy in the toast.
Electrical energy from the outlet is converted to heat and light energy for the toaster.
Electrical energy from the outlet is converted to heat energy for the toaster.
Which purpose does a light bulb serve in a circuit?
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1 point
Cell
Switch
Load
Load
Of these things in an environment, which one is a living thing?
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1 point
air
river flowing down a mountain
mushrooms sprouting
clay on the side of the riverbank