Science - Grade 7: Lesson 1

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What is an organism?

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14 Terms

1

What is an organism?

A living thing

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2

Define lens

A curved piece of glass that refracts light

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3

Define magnification

how much bigger a sample appears to be under the microscope than it is in real life

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4

define chroma

The purity or strength of a color

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5

define multi

many

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6

define cells

Cells are the basic units of structure and function in living things.

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7

Define microscope

device that produces magnified images of structures that are too small to see with the unaided eye

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8

Who was the first researcher to see bacteria under a microscope?

Anton Van Leeuwenhoek

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9

When was the first microscope invented?

1590

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10

First to use the microscope to observe "cells"

Robert Hooke

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11

First to see living cells

Anton van Leeuwenhoek

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12

The cell theory states

All living things are made up of cells, cells are the basic units of structure and function in living things, new cells are produced from existing cells

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13

Some microscopes focus light through lenses to produce a magnified image, and other microscopes use _____________

beams of electron

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14

lab safety rules

Goggles, Eye Wash, No eating or drinking, be calm, Pay attention, follow directions

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