Grade 7 Science Quiz: Microscopes

During a biology class, Henry is using a compound microscope to examine a slide of onion cells. What is the primary function of the compound microscope?

• To enlarge images

• To store samples

• To illuminate specimens

• To analyze chemical properties

Which part of the microscope is used to hold the slide in place?

• Illuminator

• Base

• Eyepiece

• Stage

Aiden is using a microscope in his biology class. What is the function of the coarse adjustment knob?

• To fine-tune the focus

• To hold the slide

• To move the stage up and down

• To illuminate the specimen

What is the purpose of the diaphragm in a microscope?

• To focus the specimen

• To adjust light intensity

• To hold the slide

• To magnify the image

During a science class, Mason is trying to understand how a microscope works. He wonders which part of the microscope connects the eyepiece to the body.

• Revolving Nosepiece

• Arm

• Base

• Stage

What is the magnification of the eyepiece typically used in microscopes?

• 50x

• 10x or 15x

• 5x

• 20x

What is the first step in using a compound microscope?

• Place the slide on the stage

• Adjust the diaphragm

• Turn on the light

• Select the highest power objective

Which of the following is a function of the fine adjustment knob?

• To move the stage quickly

• To focus the image sharply

• To change the light intensity

• To hold the slide in place

Evelyn is using a microscope in her biology class. What is the role of the objective lens in the microscope?

• To focus the image

• To illuminate the specimen

• To hold the slide

• To magnify the specimen

Which of the following is NOT a part of a compound microscope?

• Cell membrane

• Coarse adjustment knob

• Stage clips

• Illuminator