#1 Scientific Method
Science always begins with what?
An observation
What is an example of a variable?
What is an independent variable?
variable that is changed in the experiment
What is the I.S. unit for mass
gram
500 mL= ______ L
0.5 L or .5 L
What are the two types of data that can be observed?
Quantitative and Qualitative
55 is an example of what type of observed data?
quantitative
What is a dependent variable?
variable observed during the experiment
What is the S.I unit for length?
meter
Steven goes to the grocery store and is looking at a winter squash. It has a mass of 1.8 kilograms. How many grams is the winter squash?
1800 g
Explanation for a set of observations, defines what vocabulary word?
Hypothesis
qualitative
Why do you need to record and analyze data?
To make sure that the results supports the hypothesis
liter
Chase measured a line for his art project. It is 200 millimeters long. How many centimeters is the line?
20 cm
Why do scientists use the scientific method?
To solve a problem or answer a question
What are the two variables that are included in a scientific experiment?
independent and dependent variable
How do you form a theory?
after the hypothesis has been tested many times and is supported by much evidence.
1500 m= ______ km
1.5 km
Bob rode his bike 875 km, what is distance in hm?
8750 hm
What is a controlled experiment?
only one variable in the experiment is changed
Experiments must be repeated, True or False?
True
In an experiment, a set of 50 plants are receiving plain water while another 50 plants are receiving water with fertilizer.
What is the controlled group in this experiment?
The 50 plants that are receiving plain water
8000 mg= ________ g
8 g
Carlos has a 1.2 meter long piece of wood. He wants to cut it into 3 equal lengths. How long should each piece be in millimeters?
400 mm