Graphs and Models
Name one of the 3 types of graphs we discussed.
Bar, Circle, Line
What would you use to measure the volume of a liquid?
a graduated cylinder
The thing that scientists change in an experiment is called the...
Manipulated variable (independent variable)
If an accident occurs in the classroom, who should you tell first?
Your teacher
Why do scientists need models of atoms in order to study them easily?
The are too small to see normally
Daily Double:
The distance from Graysville to Lewisville is approximately...
A - 20 km
B - 20 cm
C - 20 m
True or False: When you estimate something, you are guessing.
FALSE - it is an approximation
The metric system is based on the number...
10
If a graph has no trend, what does that mean?
The variables have no relationship
What does a balance measure?
Mass
A representation of a simple or complex object or process is a...
Model
What safety equipment would you wear in the lab to protect your eyes from chemicals?
Safety goggles
Scientists use these to better look at complex systems because they can store a lot of data.
Computer programs
Are these measurements precise, accurate, both, or neither?
A - 2.45 cm
B - 2.46 cm
C - 2.44 cm
Actual Length - 3.11 cm
Precise
What is the difference between precision and accuracy?
Precision = how close measurements are to each other
Accuracy = how close measurements are to the real value
What is something you would you use a kilometer to measure?
Distance between things really far apart (like 2 cities)
What are the two types of data that can be displayed by a graph?
Categorical and Numerical
Calculate the volume of a box that is 5 cm long, 2 cm wide, and 2 cm high.
20 cm3
If you approximate the length of your desk, what are you doing?
Estimating a measurement
How many meters are in a kilometer?
1,000 m