Variables
The Scientific Method
Units
Volume
Scientific Instruments
100
In an experiment, there are two types of variables. What are they called?
The independent variable and the dependent variable
100
What is a hypothesis?
A prediction of what is going to happen.
100
What units do we use for MASS?
Grams (g)
100
What is the formula for finding the volume of a regular shaped object, such as a book?
Length x Width x Height
100
This is an instrument used to measure MASS
Triple Beam Balance
200
The dependent variable is the thing we are _____________
Measuring
200
A student is planning on doing an experiment to test how certain amounts of water might affect plant growth. What could be a hypothesis for their experiment?
If the plant receives more water, then it will grow taller. OR: If the plant receives less water, then it will grow taller.
200
What side of the ruler do we use?
Centimeter side
200
What do we use to find the volume of an irregular shaped object, such as a marble?
A graduated cylinder
200
This is what you would use to measure the length, width or height of something.
A Ruler
300
The independent variable is the thing we are _________________
Changing
300
After collecting data, a scientist might put their results in a graph. What are the two types of graphs they might use?
A line graph or a bar graph.
300
When we multiply length x width x height and get a number, what unit do we put at the end?
cm3
300
What would we use to find the volume of a bowl of water?
A graduated cylinder
300
To find the volume of a regular shaped object, such as a book, we would use the formula length x width x height. What would we use to find those measurements?
A Ruler
400
A scientist decides to measure the amount of rain every day for one week. He takes a measurement of rain Monday, Tuesday, Wednesday, Thursday, Friday, Saturday and Sunday. What is the dependent variable in this experiment?
The amount of rain
400
A scientist notices that two trees are dying. She decides to water one tree and not the other. In one month she notices that the tree she has watered is growing taller and producing flowers. The tree she has not watered is now dead. The scientist made an : 1. Observation 2. Hypothesis 3. Inference 4. Graph
Observation
400
When we find liquid volume and use a graduated cylinder, what units do we use?
mL (milliliters)
400
What is the definition of volume?
The amount of space an object takes up.
400
A triple beam balance is used to find the _____________ of objects.
Mass
500
A scientist wants to see if a certain amount of water affects plant growth. He plants three seeds in three separate pots, with the same amount of soil, sunlight, and all at the same temperature. Pot 1 will receive no water, pot 2 will receive 1 cup of water a week, and pot 3 will receive 2 cups of water a week. After one month he records his observations.
What are three things the scientist must keep constant (not change) in this experiment?
500
After researching, experimenting and collecting data, a scientist then...
Explains the results of their experiment and comes up with a conclusion.
500
What system of measurement do we use in science?
The Metric System
500
List the three steps to finding the volume of a marble.
1. Fill a graduated cylinder with water and record 2. Put the marble in and record the new volume. 3. Ending volume - Starting volume
500
To find the volume of a liquid or of an irregular shaped object, we would use a ___________________.
Graduated Cylinder
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