Microscope Parts

This ten-question biology game helps KS3 and GCSE students name microscope parts and practise using a light microscope. The drawing shows a side view of a school light microscope. Each label question places four lettered spots on callout lines. The target part appears above the drawing. Tap that label, then tap the letter whose line ends at the named part. On a keyboard, press 1, 2, 3 or 4 to choose spots A, B, C or D.

In a normal round, the first six questions ask you to label parts. The next two ask what parts do. Question nine asks about focusing method. Question ten asks you to find total magnification from the two lens values. The four spots sit beside real parts, and the wrong label choices are nearby parts. Read each callout line before you answer.

The Challenge start mixes five label questions with two function questions, one focusing-method question, one total-magnification question and one light-versus-electron question. All ten questions appear in a mixed order. The comparison appears only in the Challenge start.

A correct answer earns 10 points. Answer within 35 seconds for 5 extra points. When time reaches zero in a normal round, the question stays open but the bonus ends. In the Challenge start, time running out locks the question and counts as a timeout. Practice mode turns the timer off. Your best score stays on this device, with a separate score for the Challenge start.

A light microscope uses light and lenses to make a small specimen easier to see. The lamp sits below the stage and sends light up through the slide. Some school microscopes use a mirror to direct light from outside instead of a built-in lamp. The stage supports the slide. Stage clips keep it from shifting while you look.

The eyepiece lens is the lens at the top that you look through. Objective lenses sit above the specimen. A microscope often has several objectives with different powers. The revolving nosepiece turns to select one. The coarse and fine focusing knobs help bring the specimen into view and sharpen it. The arm supports the upper parts. The base supports the microscope on the bench.

For total magnification, multiply the eyepiece value by the objective value. An eyepiece marked ×10 with an objective marked ×40 gives ×400 total magnification. This game practises that lens calculation. It does not ask you to find image size or real size. Magnification Challenge has separate questions about measuring cells and scale bars.

Start with the lowest-power objective. It gives you a wider area to search. First use the coarse focusing knob, then make the view sharper with the fine focusing knob. A slide clip holds the slide in place, while the light source shines from below. These steps help you find and focus the specimen before you choose a stronger objective.

The KS3 National Curriculum includes observing and recording cell structure with a light microscope. AQA Biology 8461 and Combined Science 8464 cover microscopy in 4.1.1.5. Their light-microscope practicals are 8.2.1 and 10.2.1. Edexcel Biology 1BI0 and Combined Science 1SC0 include microscope practical 1.6. OCR Biology A J247 covers lenses, a stage and a lamp in B1.1a. OCR Biology B J257 covers light microscopy in B1.1b. See the biology games page for related practice. The current AQA Biology specification, AQA Combined Science specification, Edexcel Biology specification, Edexcel Combined Science specification, OCR Biology A specification and OCR Biology B specification list their course content.

GCSE biology also compares light and electron microscopes. Electron microscopes have much higher magnification and resolution, so they can show finer detail. The Challenge start asks about this difference. The idea appears in AQA 8461 and 8464 section 4.1.1.5, OCR J247 B1.1c and OCR J257 B4.2.

• Begin at the top. Find the eyepiece lens, then follow the tube down to the revolving nosepiece and objective lenses.
• The objective lenses point towards the stage. The stage is the flat platform that carries the slide.
• Stage clips sit at the edge of the stage. They press on the slide so it stays still.
• The focusing knobs sit on the arm. The coarse knob is larger than the fine knob.
• The light source sits below the stage. The base is the broad foot that rests on the bench.

A label question uses four parts that are near one another, so compare each line with the microscope before tapping. For a function question, focus on the job named in the prompt. For a method question, remember lowest power first and coarse before fine. For total magnification, multiply the two lens numbers.

Do not rush the callout lines. A line can point across the drawing to a spot on the other side. The letter marks the end of the line, and the other end touches the part. If you are unsure, use practice mode and take your time.