2.1 Making Things Bigger

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From Pearson Science Yr 8
Rahma Abz
Flashcards by Rahma Abz, updated more than 1 year ago
Rahma Abz
Created by Rahma Abz about 5 years ago
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2.1 Making Things Bigger By: Rahma Salih Abdelgadir
What is a microscope? A microscope is an instrument used by scientists to make very small things bigger, so they become visible to us.
What is a light microscope? A light microscope is a type of microscope used by scientists. They have a mirror or a lamp that passes though the specimen, then the light passes though lenses which makes the specimen look bigger.
What is the measurement used by scientists for microscopes? The measurement is a micrometre (μm) this measurement is one-thousandth of a millimetre. This unit of measurement is used for microscopic objects.
What is a Stereo microscope? A stereo microscope is a binocular microscope which is 3D, light shines onto the specimen then reflected back up, after though the lenses to create an image. Although light does not pass though the specimen.
What is dissection? To cut apart a dead animal or plant, for the purpose of studying it as scientists.
What is a specimen? A specimen is an object which is being looked at and studied though a microscope.
What is an image? An image is an object being seen though a microscope.
What are the two types of light microscopes? They are two types of light microscopes are; 1. Dark-field microscope which is an ultra microscope, 2. Phase-Contrast microscope.
What an electron microscope? An electron microscope is very powerful microscope. Electron microscopes use beams of tiny particles named electrons instead of light. They are able to magnify to a million times.
What is magnification? Magnification is magnifying in a microscope and tells you How much bigger an image is from its normal state.
What are the two types of electron microscopes? The two types of electron microscopes are; transmission electron microscopes (TEM) and scanning electron microscopes (SEM).
What are the lenses in a light microscope? The lenses found in a light microscope are; 1) the ocular, or eyepiece lens that a scientist looks though and 2) the objective lens, or the lens closest to the object or specimen.
What are two differences with SEM AND TEM?
Name label 3 and its job The objective lens and its job is to look at the specimen its the closest lens to it.
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