A scientist takes a small, partially inflated balloon
out of liquid nitrogen (at a very low temperature).
As the balloon rests on the table, it begins to grow
in size. Which statement(s) best explains why the
balloon grows?

The air from the outside comes inside the
balloon. More air means more volume.
The air warms and increases particle
movement. Increased particle movement
leads to increased volume.
side
o
Increased temperature means increased
volume as long as the container is flexible.

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