What is Science?
The study of the composition, structure, properties, and reactions of matter
chemistry
A proposed answer to a question
Hypothesis
The variable in an experiment that you, as the scientists, change.
Manipulated/Independent Variable
The metric system is based on what number?
10
Which of the following stopwatches would be the most precise?
a) 45.1 seconds
b) 45.15 seconds
c) 45 seconds
b) 45.15 seconds
Information gathered using your senses
Observation
A well-tested explanation to a set of observations or experimental results.
Scientific Theory
In an experiment, this is the group that does not receive the thing you are testing. This group serves as a baseline to compare the other test group to.
control group
What is the metric base unit for volume?
What are the 2 branches of physical science?
chemistry and physics
_________ helps to expand our knowledge while ________ applies knowledge to solve practical problems.
Science helps to expand our knowledge while Technology applies knowledge to solve practical problems.
What do you do if your data does NOT support your hypothesis?
Revise experiment
These are the variables that you do NOT change and what should be kept the same so it does not effect your end results.
controlled variables
What tool would I use to measure the mass of an object?
scale / triple beam balance
What does a graduated cylinder measure?
volume
Name the 3 branches of natural science
physical science
earth and space science
life science
What is the long-term goal of the scientific method?
Solve a problem/answer a question
John is testing if chewing mint gum can actually help you remember. He has 2 test subjects to help test this. Subject A will chew gum while studying and then while testing, Subject B will not chew gum for studying or testing. He will compare their test scores.
What is the manipulated and responding variables in this experiment?
manipulated = gum
responding = test scores
How many mL are there in 0.345 L?
0.345 L = 345 mL
What does mass measure?
The amount of matter in an object
Give an example of a quantitative observation.
Answers will vary
Amy believes that reducing screen time throughout the day will improve the length of uninterrupted sleep a person experiences at night.
Write a hypothesis that Amy could use to test this idea.
If a person reduces daily screen time, then they will experience longer uninterrupted sleep.
John is testing if chewing mint gum can actually help you remember. He has 2 test subjects to help test this. Subject A will chew gum while studying and then while testing, Subject B will not chew gum for studying or testing. He will compare their test scores.
Which would be the control group and which is the experimental?
Subject A is experimental
Subject B is the control
Use "greater than" "less than" or "equal to" to compare these two measurements:
0.65 m is _____ ______ 6500 mm
0.85 m is less than 650 mm
If someone is measuring an object, how can you tell if their measurement is accurate.
Accuracy is determined by how close a measurement is to the actual/true value of what it is that is measured.