Vocabulary
What is a fact?
An objective, verifiable observation
What is the very first step in designing and executing a science experiment?
Ask a question!
When designing an experiment, scientists will test a relationship between a “cause” and an “effect.” The “effect” is known as the _______.
Dependent Variable
5 liters = __________ hectoliters
0.05 hectoliters
Suppose you are going to begin a scientific investigation. What should be one of the first things everyone in your group should do?
Read the instructions!
What is a principle?
A statement based on repeated experimental observation that describes an aspect of the world
If (IV), then (DV) because (insert explanation here)...
Control group
109 g = _______ kg
0.109kg
Why is it important to keep your lab area neat and tidy?
To avoid anything getting wet or catching fire.
What's the difference between observation and inference?
Observation: It is not an opinion and is based on the five senses.
Inference: It is a guess based on what is observed.
In a list using numbers.
Write a hypothesis predicting a relationship between the following independent variable (IV), and dependent variable (DV).
IV- longer practices
DV-improved team player performance
If there are longer practices, then the team player will score more points at each game.
2500 m = _______ km
2.5km
What is the proper way to smell a substance in the lab?
Waft
What's the difference between a law and a theory?
Law: Broad concept or principle that describes how something occurs in nature. The principle is accurate and precise.
Theory: An explanation of an observed phenomenon based on research. The explanation is precise but not accurate.
How do you collect data and show it in an organized way?
By graphing it or using a data table.
Leah, LaRenda, and Gabi decide to test what factors(solutions) influence water absorption by an egg. They remove the shell from 3 eggs by dissolving them in vinegar. They create three different water solutions. One is pure, 100% distilled water, a second is 50% water/50% corn syrup, and the third is 100% corn syrup. The mass of each egg is measured before they are put into a single solution for 24 hours.
What are the independent and dependent variables?
IV: the type of solution the egg is place in
DV: the change in mass of the eggs
6789kL converted to ML
6.789ML
What 3 words do you remember about fire safety if your clothing were to catch on fire?
Stop, Drop and Roll
The following measurements were made to determine the density of a material whose value was, according to the handbook of Chemistry and Physics:1.15 g/mL
Trial #1 0.95 g/mL
Trial #2 1.16 g/mL
Trial #3 1.26 g/mL
Comment on the accuracy and precision of these results.
The results aren't accurate or precise.
What are the five technological design thinking process?
Define the problem, design a solution, build the solution, test it out, evaluate the results.
Ada and Elijah have decided to do an experiment testing how sunlight affects plant growth. The students choose the same type of plants, soil, pots and amount of water they give the plants. They also make sure each plant is put in their designated area for the same amount of time each day. One plant is placed outside; one in front of a window that only gets light for 1/2 the day, and one in a closet. The students collect data every day for two weeks. Their results show that the plant outside grew the most and the plant in the closet had the least amount of growth.
What are the constant variables that Ada and Elijah used in their experiment?
The type of environment AND soil
391 nm converted to dam
.0000000391dam
If you ever spill a chemical on your table, what should you do?
Tell the teacher!