Variables
__________ variables are what we manipulate (change) in an experiment.
Independent
A collection of similar cells is called a....
Tissue (second level of organization)
What is the atomic number.
Number of protons in an atom.
Current is the flow of __________.
Which particle in an atom is massless?
Electron
___________ variables are what we measure or observe in an experiment.
Dependent
What do the two R's in MRS GREN stand for?
Respiration and reproduction
When an atom has an uneven number of protons and electrons it is charged. What do we call a charged atom?
Ion
What device is used to measure the current in a circuit?
Ammeter
Where is the genetic material located in a cell?
Inside the nucleus
_____________ variables are kept the same throughout an experiment.
Control
Where does respiration occur?
In the mitochondria
What are the REACTANTS in the following chemical reaction: methane + oxygen -----> carbon dioxide + water
Methane and oxygen
Draw the circuit symbol for a buzzer.
Teacher checks
How many elements are on the periodic table?
118
By having control variables, we can ensure that our experiment is a ______ _______.
What three cell components are found in plant cells, but not in animal cells?
Chloroplast, cell wall, and central vacuole
If 5 grams of salt are added to 40 grams of water, how much salt water is produced?
45 grams (Conservation of Mass)
True of false? If one component dies in a series circuit, all the components will go off.
True
An atom has a mass number of 41 and a atomic number of 19. How many neutrons does it have?
22 neutrons
Describe an experiment and identify the independent and dependent variable to determine which liquid (water, Coca-Cola, Sprite, salt water, and coffee) is best for bamboo growth.
Independent variable: type of liquid
Dependent variable: mass of bamboo / height of bamboo
Choose and organ system and state the most important organs that are a part of it and it's primary fucntion.
Checked by teacher
What are the products in respiration?
Carbon dioxide and water
Provide 3 examples of renewable energy.
Wind
Solar
Tidal
Hydroelectric
Biomass (if used sustainably)
Challenge Question (not covered in class)
Give one reason some scientists consider viruses living and one reasons some scientists consider them non-living.
Living: they can reproduce (but require a host)
Non-living: they don't show the rest of the characteristics of life (MRS GREN) and are not made of cells