Observations & Inferences
Scientific Method
Variables
Science Skills
Density
100
Using the 5 senses is known as...
an observation
100
An educated predication is called...
Hypothesis
100
How many independent variables should an experiment have?
1
100
The unit for mass is _____
grams (g)
100
Does size affect an object's density?
NOOOO!!!
200
An inference requires observations plus ____
Background knowledge
200
What is the first step of the scientific method?
Ask a question, make an observation or recognize a problem.
200
Which variable is controlled by the scientist?
Independent variable
200
If an object is irregular a _____ will need to be used to find the volume.
Graduated Cylinder
200
What is the formula for density?
D = M/V
300
Why do scientists make observations & inferences?
Helps scientists learn about the world around them, ask questions and solve problems
300
What is the ideal format for a hypothesis?
If... then... because...
300
Which axis should the dependent variable go on?
Y axis
300
What is the name of bird W?
Geospiza
300
Two factors that can affect density are ___ and ___.
Temperature and pressure
400
Which of the following is an inference?
A. The soil is wet
B. The flowers have 12 leaves
C. The ground is wet because it rained last night
D. I am going to grow taller
C. The ground is wet because it rained last night
400
Which of the following is a testable question?
A. Why does it rain?
B. Will adding baking soda to cookies make them bake faster?
C. How many colors are in the rainbow?
D. When is classroom productivity the best?
B. Will adding baking soda to cookies make them bake faster?
400
Determine the independent variable. Maria wants to see how different brands of shoes can influence how quickly her brother is able to run.
Different brands of shoes
400
What is the reading on this triple beam balance?
536.8g
400
Why does oil float on top of water?
Because oil is less dense than water OR water is more dense than oil
500
An observation that uses numbers is called...
Quantitative
500
What is the second last step of the scientific method?
Display and analyze data
500
Determine 3 constants in the following experiment. Mrs. Hodge wants to see how different amounts of sleep can affect her students' test scores. She sets up an experiment to test this.
Same test, same time of day, same sleeping conditions, same students, same pencil used, same intelligence level, etc.
500
A. What is the volume of the ring?
B. If the mass is 24 what is the density of the ring? 
4 mL
6 g/mL
500
Which objects will float on water? (Choose all that apply)
A. A rock with a density of 2.0 g/ml
B. A boat with a density of 0.98 g/ml
C. A juice with a density of 1.01 g/ml
D. A ball with a density of 0.50 g/ml
B. A boat with a density of 0.98 g/ml
D. A ball with a density of 0.50 g/ml