Eighth Grade Science Exam
Terms
undefined, object
copy deck
- Name of the Nine Charateristics of organisms?
-
1-organisms are made of one or more cells
2-Oragnisms move
3-Organisms respond to changes in thier environment
4-Organisms use energy
5-Organisms adjust to changes in thier environment
6-Organisms reproduce
7-Organisms grow and develop
8-Organisms adapt
9-Organisms have life spans - What is the main source of energy for all organisms?
- energy
- What are the raw materials that organisms use and how are they used?
- water,oxygen, and minerals; they are used and then returned to the environment to be used over and over again
- What is water important?
- living things are made up of 70% water they need to maintain this level to survive
- Francesco Redi
-
Italian Doctorconducted one of the first controlled experimants is scined
he showed that maggots hatch from eggs - Lazzaro Spallanzani
- designed an experiment to show that tiny organisms came form other tiny orgainism
- Louis Pasteur?
- A french chemist; showed that living things do not come from nonliving materials
- Life Science is?
- The study of living things
- Basic Chemistry is?
- the study of matter of which things are made
- Earth Science?
- the study of planet earth
- What do botanists study?
- plants
- What do zoologists study?
- animals
- What do Ecologist study?
- who study how living things interact with each other and thier environment
- What is Genetics?
- explains how triats of organism are passed from generation to generation
- What is the Scientific Method?
- The form of a series of procedures
- Steps of the Scientific Method?
-
1-Indentify the Problem
2-Collect Information
3-Suggest hypothesis
4-Design an experiement
5-Carry out the experiement
6-Analyze Data
7-Draw Conclusions
8-Hypothesis supported or not - What is a hypothesis?
- is a prediction that can be tested
- What is a variable?
- is the factor tested in an experiement
- What is the control?
- is the standard used to campare with the outcome of a test
- What is in a conclusion?
- is a logical answer to a question based on data and observations
- A theory
-
is an explanation of things or events based on many ovservations
Theories can be changed as new data uncover new information - A Law
-
is a reliable description of nature based on many observations
Law may change as more information becomes known - What is Critical Thinking?
- is a process that used certain skills to solve problems
- What does SI Stand for?
- international system of units; is based on certain units;using the same system gives scientists a common knowledge
- What is technology?
- is applied science or ths use of scientific knoweledge to solve everyday problems or improve the quality of life
- Ecology
- is the study of how organisms interct with each other and the environement
- Zacharia Janssen
- maker of reading glasses; put two magnifying glasses together in a tube the result was the first crude microscope
- Anton Van Leeuwenhoek
- Dutch Scintist; made a simple microscope with tiny glass bead for lens
- What is a compound light microscope?
- lets light pass through an object and the through two or more lenses
- Transmission Electron Microscope TEM
- Which is used to study parts inside a cell
- What is a scanning electron Microscope SEM
- is used to the surface of whold objectts
- Who is Robert Hooke
- An English Scientist; An made a very thin slice of cork and looked at it under his microscope
- Who is Matthias Schleiden
- A German Scientist used a microscope to study plant parts; Cocnluded that plants were made of cells