Science - Grade 7: Lesson 1

studied byStudied by 4 people
3.0(2)
learn
LearnA personalized and smart learning plan
exam
Practice TestTake a test on your terms and definitions
spaced repetition
Spaced RepetitionScientifically backed study method
heart puzzle
Matching GameHow quick can you match all your cards?
flashcards
FlashcardsStudy terms and definitions

1 / 13

flashcard set

Earn XP

Description and Tags

14 Terms

1
What is an organism?
A living thing
New cards
2
Define lens
A curved piece of glass that refracts light
New cards
3
Define magnification
how much bigger a sample appears to be under the microscope than it is in real life
New cards
4
define chroma
The purity or strength of a color
New cards
5
define multi
many
New cards
6
define cells
Cells are the basic units of structure and function in living things.
New cards
7
Define microscope
device that produces magnified images of structures that are too small to see with the unaided eye
New cards
8
Who was the first researcher to see bacteria under a microscope?
Anton Van Leeuwenhoek
New cards
9
When was the first microscope invented?
1590
New cards
10
First to use the microscope to observe "cells"
Robert Hooke
New cards
11
First to see living cells
Anton van Leeuwenhoek
New cards
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
New cards
13
Some microscopes focus light through lenses to produce a magnified image, and other microscopes use _____________
beams of electron
New cards
14
lab safety rules
Goggles, Eye Wash, No eating or drinking, be calm, Pay attention, follow directions
New cards
robot