Directions Read each cause and effect relationships.
Determine the cause.
Describe the effect.
Questions
1. Whenever electrons of an atom unite with electrons of another atom, a chemical change occurs.
What is the cause?
What kind of change occurs?
2.Water expands when it freezes. Expanded ice floats on lakes and ponds.
What causes the water to expand?
What is the effect on the expanded ice?
3.Some metals will expand when heated. Expanded metals may bend.
What causes the metal to expand?
What is the effect of the expanded metal?
4.Gases expand when heated. An expanded gas occupies more space.
What causes the gas to expand?
What is the effect of the expanded gases?
5.Give an example of a cause and effect relationship.

Electromagnets coils of wire paper clips picked up 10 3 15 6 20 9 25 12 ms. owens' class was studying magnets. ms. owens showed her students how to make an electromagnet using a nail, a d-cell battery, and plastic coated wire. the students wrapped the wire around the nail and then attached the ends to the battery. when they were finished, they tested their magnets by investigating how many paperclips their magnets could pick up. they also tested whether they could increase the strength of their electromagnets by using more coils of wire. they recorded the class average of their results in the data table seen here. ms. owens asked her students to graph their data in a line graph. how should the students label the x-axis on their line graph? a) size of battery b) number of paper clips c) number of coils of wire d) strength of electromagnet