Download Electricity and Magnetism Unit Test 2014

SAS Pudong Grade 6 Science – Electricity and Magnetism Unit
1. Which one is an insulator?
A. Wood
B. Steel
C. Iron
D. Metal
2. What are 3 ways to measure electricity?
A. Volts, Amps, Batteries
B. Ohms, Volts, Amps
C. Volts, Ohms, circuits
D. Switches, Volts, Ohms
3. What is true about lights in a series circuit?
A. They are dimmer than in a parallel circuit.
B. They all stay lit if one stops
C. There is more than one path for the electricity to flow in.
4. What item below is not part of every circuit?
A. power source
B. wire
C. load
D. switch
5. What statement is true?
A. Parallel circuits have very dim lights because they all share one path
B. Series circuits can be used to keep some lights on and some off
C. If the resistance increases and the voltage remains the same, then current decreases
D. When voltage increases, resistance and current also increase
TRUE or FALSE
6_____An Open Circuit means that the circuit is broken and electricity cannot flow. Closed Circuit
means that the circuit is complete and current can flow.
7_____Electricity is the flow of electrons through an insulator
8_____Resistance can refer to the increase or decrease of current in a circuit
9_____The amount of current in a circuit is measured in Amps
10____A resistor will decrease the current while the voltage stays the same.
11____The flow of electrons is interrupted in a closed circuit
12____An example of a load would be a light bulb
13____If electrons flow, but an electrical device will not work, the current is too low.
Choose the object in each question that has the greater resistance – choose A or B.
14. A. a 12 m long conductor
OR
15. A. a 15 cm strip of rubber
B. a 14 cm long conductor
OR
16. A a copper wire with a thickness
of 5 mm and length of 10 cm
17. A a cold conductor
OR
B. a 15 cm strip of metal
B. a copper wire with a thickness
of 15 mm and length of 10 cm
OR
B. a warm conductor
The circuit below, like all complete circuits, includes three parts. Please label those parts in the
circuit diagram below:
20.
1.5 V
19.
18.
Look at the circuit design below and identify which other light bulbs will go out, if the selected
bulb is removed from the circuit and not replaced with anything.
F
G
+
B
E
_
A
I
C
D
Choose by individual letters or “all” or “none”
21. Bulb A is removed: __________________
22. Bulb C is removed: __________________
23. Bulb D is removed: __________________
24. Bulb H is removed: _________________
H
25.
26. What three types of metals are ferromagnetic?
A. Iron, nickel, and copper C. Nickel, iron, ferrous
B. Iron, zinc, ferrous
D. Cobalt, Iron, Nickel
27. What force exists between two like poles?
A. Repulsion
C. None
B. Repulsion and attraction D. Pulling
28. What is a magnetic field?
A. The invisible force surrounding a magnet
B. A field of magnets where iron filings gather
C. A north-south pole bar magnet
D. The pattern that the copper filings make around a magnet
29. What is the relationship between magnetic force and distance?
A. The closer two unlike poles are to each other, the stronger the magnetic force will be
B. The closer two like poles are to each other, the weaker the magnetic force will be.
C. The closer two unlike poles are to each other, the weaker the magnetic force will be.
D. The further two unlike poles are to each other, the stronger the magnetic force will be.
30. What is a magnetic domain?
A.
B.
C.
D.
A group of atoms in a magnet whose atoms are aligned in the same direction
A group of iron filings around a magnet that are aligned in the same direction
A group of iron filings around a magnet that are aligned in random directions
A group of atoms in a magnet whose atoms are aligned in random directions
31. Dr Rosen has just managed to balance two disc magnets above each other. Which statement
below can explain how this happened?
A.
B.
C.
D.
The magnets must be opposite poles
Unlike poles repel, so they move away from each other
The magnets are either north-north or south-south
One pole is north and the other can not be known
Fill in the blank!
Word Bank – (Not all words will be used)
Push – Pull – Repel – Magnetic Field – Ferromagnetic – Pole(s)
Domain(s) – Alignment - Nickel –– Like – Unlike
32. Attract means to __________.
33. The term repel would mean that two ______ poles would push away.
34. The area of a magnet where the magnetic force is strongest at a magnets ______.
35. The south pole of a magnet is attracted to the ___________ pole of another magnet.
36. Two N-S magnets are glued to a sheet of paper. Iron filings are sprinkled, and the table is tapped
several times. Which image (A, B, C or D) matches what the filings would look like?
DONE!