7th Grade Science
Circuits Lab
Symbols
bulb
1.
battery
Build a series circuit with two bulbs and one battery. Use your foldable to make sure you are doing it correctly.
Notice the brightness of your bulbs. Have the teacher to check your circuit to be sure it is correct. The teacher will
initial below. You may NOT move forward until the teacher has approved your circuit.
Teacher’s Initials: ________________________________
2.
Draw your circuit below using the symbol for batteries and bulbs that you learned in class. Label all parts of your
circuit (wire, bulbs, battery).
3.
Consider the advantages and disadvantages of a circuit that you wrote on your foldable. Test one of these on your
circuit to prove that it is a real advantage or disadvantage. Explain your results below in complete sentences.
_________________________________________________________________________________________________________________________________________________
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4.
After observing the teacher construct a series circuit with TWO batteries, describe what happens when increasing the
voltage in a series circuit.
5.
Build a parallel circuit with two bulbs and one battery. Use your foldable to make sure you are doing it correctly.
Have the teacher to check your circuit to be sure it is correct. The teacher will initial below. You may NOT move on
until the teacher has approved your circuit.
Teacher’s Initials: ________________________________
7th Grade Science
Circuits Lab
6.
Draw your circuit below using the symbol for batteries and bulbs that you learned in class. Label all parts of your
circuit (wire, bulbs, battery).
7.
Consider the advantages and disadvantages of a circuit that you wrote on your foldable. Test one of these on your
circuit to prove that it is a real advantage or disadvantage. Explain your results below in complete sentences.
_________________________________________________________________________________________________________________________________________________
_________________________________________________________________________________________________________________________________________________
_________________________________________________________________________________________________________________________________________________
8.
How did the brightness of bulbs in the series circuit compare to the brightness of the bulbs in the parallel circuit?
__________________________________________________________________________________________________________________
9. Complete the chart below.
Test each material below in your circuit by replacing one of the wires with the material and seeing if the light comes on.
Material
Penny
Nickel
Popsicle Stick
Toothpick
Aluminum foil
Paper
Prediction (Conductor or Insulator?)
Observation (Conductor or Insulator?)