A magnet is an object that produces a magnetic field. True or false?
True
Oops!
Check
Okay!
Check
boom
Lose 50 points!
Oops!
shark
Other team loses 20 points!
Okay!
gift
Win 20 points!
Okay!
banana
Go to last place!
Oops!
25
Draw the magnetic field lines with their direction to describe the difference between magnetic fields of a bar magnet and a U-shaped (horseshoe) magnet.
Oops!
Check
Okay!
Check
25
The compass needle is free to turn to point north-south because ______
the Earth has a magnetic field.
Oops!
Check
Okay!
Check
25
Which does cause sound? How does sound travel?
Vibration causes sound. Sound travels though sound waves.
Oops!
Check
Okay!
Check
25
Name 2 kinds of noise pollution and give examples for each kind.
Natural and artificial noise pollution.
Oops!
Check
Okay!
Check
20
Which medium is glass? Why? (A/B/C/D)
D
Oops!
Check
Okay!
Check
15
How is the Earth similar to a magnet?
Both have North and South Poles; both have magnetic field
Oops!
Check
Okay!
Check
10
Is the upper side of the compass South, North, East, or West?
North
Oops!
Check
Okay!
Check
lifesaver
Give 20 points!
Oops!
rocket
Go to first place!
Okay!
shark
Other team loses 25 points!
Okay!
thief
Give points!
5
10
15
20
25
15
If the north pole is placed with the north pole of another magnet, they will repel. True or false?
True
Oops!
Check
Okay!
Check
baam
Lose 20 points!
Oops!
gift
Win 15 points!
Okay!
shark
Other team loses 20 points!
Okay!
banana
Go to last place!
Oops!
10
Magnets can attract iron nail. True or false?
True
Oops!
Check
Okay!
Check
15
Compare the speed of sound in vacuum, solid, liquid, and gas.
