Measurement
Convert 9 cm to mm?
90 mm
What is the difference between an independent variable and dependent variable?
Independent variable- What is being changed/manipulated
Dependent variable- What is being measured
What variable can be found on the X axis of a graph?
Independent Variable
What is paper chromatography?
A method used to separate components from a compound
What is a dichotomous key?
A tool used to organize and identify living/non living things by following steps
If a meter stick is used to measure distance, what is a triple beam balance used to measure?
Mass
An experiment is carried out to determine the different levels of contaminants in soil and how it will affect the growth of tomatoes. In this experiment what is the dependent variable?
height of the tomato plants
What part of the graph tells you what the graph is about?
The title of the graph
How do you hold a microscope?
One hand on the Base the other hand on the Arm of the microscope
Why are hypothesis considered valuable?
A hypothesis can lead to further investigation even if it is disproved by the experiment
When looking through a graduated cylinder, the most accurate and precise reading can found where?
At the Meniscus
How do you write a hypothesis?
Use the words If (I.V) and Then (D.V)
What is the difference between a bar graph and a line graph?
Bar graph sorts categories
Line graph shows change over time
When looking through a microscope, What parts would allow the image to focus?
Coarse adjustment and Fine Adjustment
Scientists should be questioned about their claim if...
1. work was peer reviewed
2. results cannot be repeated by other scientists
3. conclusions are logical from evidence
4. data comes from very large samples
2. Results cannot be repeated by other scientists
If a graduated cylinder has 25 mL of water and a ball was added to increase it to 42 mL, what was the volume of the ball?
17 mL
What is the difference between a CONTROL GROUP and an EXPERIMENTAL GROUP ?
The CONTROL GROUP does NOT receive the independent variable
The EXPERIMENTAL GROUP DOES receive the independent variable
What are intervals? Why are they important in graphing?
Intervals are the space between numbers. They are important because they must be consistent when writing them (go by 2's, 3's, 5's, etc.)
How do you use a dichotomous key?
Read all the statements then go to the next option until the organism/item is identified
Which substance is an organic molecule?
1. Oxygen
2. DNA
3. Water
4. Carbon Dioxide
2. DNA
What is the volume of a cube with 5 cm length, 3 cm width and 10 cm height
150 cm3
What is a valid conclusion that relates increasing temperature and your heart rate
As the temperature increases, the heart rate will increase
What are the major parts of the graph (must know all parts to earn credit)
1. X axis
2. Y axis
3. Title
4. Scale/intervals
What could lead to damage to a microscope and specimen?
using the coarse adjustment with the highest magnification
Put your fingers on the slide and objective lens.
What is the error in the following hypothesis?
Can insects survive hot water and detergent from a washing machine?
The hypothesis is stated as a question. A hypothesis must be a statement and written in If...Then