Weekly Assessment

Ms Jo Jo rubbed two balloons with a piece of wool. What will happen when the balloons are brought near each other?

• The balloons will repel each other.
• The balloons will attract each other.
• The balloons will become positively (+) charged.
• The balloons will pop.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

What charge does an electron have?

• negative (-)
• positive (+)
• neutral or no charge (0)

What happens when you touch a metal doorknob after rubbing your shoes on the carpet?

• The doorknob sends a burst of electric current into your body
• Millions of electrons go from your finger into the doorknob
• The doorknob sends millions of electrons into your finger
• our finger becomes negatively charged

Tags

NGSS.MS-PS2-3

Which of the following is caused by static electricity?

• a stove getting hot when it is turned on
• a magnet being attracted to a refrigerator
• a lightning strike during a storm
• a light bulb coming on when a switch is turned on

Tags

NGSS.MS-PS2-3

The girl's hair and the comb are attracting  one another.  The hair and the comb have

• opposite charges
• like charges

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

A repelling force occurs between two charged objects when the charges of are of __________.

• like signs

• unlike signs

• equal magnitude

• unequal magnitude

Tags

NGSS.MS-PS2-3

Which of the following most closely resembles an electromagnetic?

• 
• 
• 
• 

Which poles are attracted? 

• north and north
• south and south
• north and south

Tags

NGSS.MS-PS2-3

Which metals are attracted to magnets? 

• iron, nickel, cobalt
• gold, silver, platinum
• copper, magnesium, aluminum

Tags

NGSS.MS-PS2-3

Earth acts like a giant magnet because its center is made up MOSTLY of

• granite
• limestone
• iron
• nickel