Read the questions below. Encircle the letter of the correct answer. 1. Controls the sum of light coming to the specimen
A. Objectives
D. Diaphragm
B. Base
C. Nose piece
2. Assemble lights and improve magnification
D. Tube
A. Light source
B. Eyepiece C. Objectives
3. Light or mirror that projects light through the diaphragm
D. Arm
A. Stage clips
B. Light source C. Tube
4. The level platform where you put your slides
C. Base
D. Stage
A. Arm
B. Diaphragm

the aurora is formed when charged particles emitted from the sun during a solar flare penetrate the earth's magnetic shield and collide with atoms and molecules in our atmosphere. these collisions result in countless little bursts of light, called photons, which make up the aurora.

auroras are generated by charged solar particles hitting molecules in earth's atmosphere. this usually happens in high latitudes, because our planet’s magnetic field tends to funnel these particles toward the poles. that’s why it can be experienced in northern ohio.