1. magnets have force that attracts materials made of____
a. copper
b.wood
c.plastic
d.nickel
2. magnets have invisible____
a.magnetic field
b.electric current
c.sounds waves
d. signals
3.the force exerted by magnet is _______.
a.push only
b.pull only
c.push and pull
d.no force
4.all magnets have same ___.
a.colors
b.properties
c.sizes
d. shapes
5.if you break a magnet into pieces the force exerted will be_______.
a.stay the same
b. decrease
c. increase
d.get stronger

need napo ​