Lesson 1
What is scientific knowledge about the natural world based on?
the natural world
What is evidence?
proof that a hypothesis is correct or incorrect
a tool used to see objects that cannot be seen with the bare eye is called a
microscope
How many variables should change in a fair test?
1
Name the 4 types of models scientists use
computer model
2D
3D
mental model
What are 3 examples of the natural world?
What is an inference?
if you wanted to measure the mass of an object you would use a
pan balance
Why do scientists compare their data with each other?
How do we describe a 2D model?
a model that has length and width
What do we use to observe something?
5 senses
What is it called when you think about how things are the same and different?
comparing
a _____ is used to measure force
spring scale
If 2 scientists are doing the same experiment but they get different results, what should they do?
Go over the procedure (step by step instructions) to see why their results were different
How do we describe a 3D model?
a model that has length, width, and height
Before you conduct an experiment, you must do this.
Form a hypothesis
What is a hypothesis?
an educated guess as to what you think may happen
What would be the best resource to find out information about a type of insect that lives in Florida?
speaking to a scientist who studies insects in Florida
What do we call the thing that changes in an experiment?
What can a computer model do that all the other models cannot?
Provide an example of a testable question.
answers may vary
What is the relationship between observations and inferences?
inferences are based on observations
How is a hand lens different from a microscope?
What is it called when a scientists tests something more then once?
Why do they do this?
repeated trials
for accuracy
Provide an example of a 2D model & an example of a 3D Model