Scientific Method
CER + Lab Safety
Graphing
Characteristics of Life
Hodgepodge
100
A student tests whether the amount of sunlight affects the growth of bean plants. Each plant receives 2, 4, 6, or 8 hours of sunlight each day.
The Independent Variable is...
What is the amount of sunlight each day?
100
You spill a chemical on your hand during a lab.
The two safety protocols that should be followed are...
What is...
Tell the teacher and immediately rinse the area with water.
100
Axis where you can find the dependent variable & independent variable
What is the y-axis for DV and the x-axis for IV?
100
Organism made of one cell.
What is unicellular?
100
The smallest unit of life.
What is a cell?
200
A student tests whether water temperature affects how quickly a sugar cube dissolves. They use water at different temperatures and record how many seconds each sugar cube takes to dissolve.
The Dependent Variable is... and it is measured in...
What is....
Time for the sugar cube to dissolve, measured in seconds
200
The part of a CER that explains why the evidence supports the claim.
What is reasoning?
200
Students record the favorite school lunch of 100 students: pizza, tacos, burgers, salad, or sandwiches.
The data should be displayed in this type of graph.
What is a bar graph?
200
After running outside on a hot day, a person's body sweats to help lower their temperature.
The characteristic of life demonstrated is...
What is homeostasis?
200
Biology is the study of...
What is life?
300
Students want to know whether the amount of fertilizer affects plant growth. They give plants 0 g, 2 g, 4 g, or 6 g of fertilizer. All plants are the same species and receive the same amount of water, soil, sunlight, and growing time. After three weeks, students measure plant height.
The independent variable, dependent variable, and two constants are...
What is...
IV = amount of fertilizer
DV = plant height
Constants = any two of plant species, water, soil, sunlight, growing time
300
Claim: Plants receiving fertilizer grew taller than plants without fertilizer.
The stronger piece of evidence is... because...
A. The fertilized plants looked healthier.
B. Fertilized plants averaged 14 cm, while non-fertilized plants averaged 8 cm.
What is...
B. Because it provides numerical data that directly supports the claim.
300
A student measures the height of the same plant every three days for 18 days.
The type of graph that should be used is... and the variables that go on each axis are...
What is...
line graph
X-axis: time (days)
Y-axis: plant height
300
True or false: To be considered living, you need ALL characteristics of life.
What is true?
300
Find the mean of the following:
5, 10, 15, 20, 25
What is 15?
400
A student wants to determine whether a new plant food increases plant growth. Five plants receive the recommended amount of plant food, while five plants receive only water. All other conditions are kept the same.
The control group in this experiment is...
What is..
the plants receiving only water
400
A chemical splashes into a student's eyes. The piece of safety equipment that should be used is...
What is the eyewash station?
400
The mean of the rainfall. Round to 2 decimal places.
What is 5.44mm
400
A puppy eats food and uses the nutrients to grow larger over several months.'
Two characteristics of life that are demonstrated in this scenario are...
What is metabolism AND growth & development
400
A student says, "My hypothesis was wrong, so my experiment failed."
This statement is incorrect because...
What is...
An unsupported hypothesis does not mean the experiment failed; the results still provide information.
500
A student wants to test whether different amounts of water affect plant growth. Plant A receives 50 mL of water and is placed by a sunny window. Plant B receives 100 mL and is placed on a classroom shelf. Plant C receives 150 mL and is placed under a grow light.
The major problem in this experiment is... and a solution to fix it is....
What is...
More than one variable is changing. The light conditions should be kept the same so that only the amount of water changes.
500
Data:
No fertilizer → 6 cm growth
Fertilizer → 11 cm growth
Give a one-sentence reasoning statement connecting the data to the claim that fertilizer increased plant growth.
What is...
Because the fertilized plant grew 5 cm more than the plant without fertilizer, the data support that fertilizer increased plant growth.
500
A student tests the effect of exercise time on heart rate. They graph the results with heart rate on the X-axis and exercise time on the Y-axis. Their graph has the title "Graph" and neither axis includes units.
The three aspects that need to be changed are...
What is...
can take any three: exercise time should be on X-axis; heart rate should be on Y-axis; graph needs a descriptive title; axes need units.
500
Match each scenario to the characteristic of life.
- A lizard moves into the shade when it becomes too hot.
- A seedling becomes taller and develops new leaves.
- A bear breaks down food to obtain energy.
- A bacterium divides to produce two new cells.
What is...
1. Response to Stimuli
2. Growth & Development
3. Metabolism
4. Reproduction
500
A student finds an unknown object with a mass of 54g. The student also measured the unknown object and got the measurements 5 cm × 7 cm × 2.5 cm
Determine the object's volume AND density. Round to 2 decimals.
Volume: 87.5 cm3
Density: 1.62 g/cm3