Biological Sciences
Which question could best be investigated using scientific inquiry?
How does the amount of sunlight receive affect the growth of flowering a plants?
Which of these is an example of a compound?
A. Two Fluorine atoms bonded together
B. A piece of solid gold made of millions of gold atoms
C. An atom of nitrogen bonded to three atoms of hydrogen
D. A drop of liquid mercury made of millions of mercury atoms
C. An atom of nitrogen bonded to three atoms of hydrogen
What causes us to see a shooting star?
A. nearby star enters a black hole
B. An asteroid collides with another asteroid
C. A comet travels through the solar system
D. A meteor burns up in Earth's atmosphere
D. A meteor burns up in Earth's atmosphere
A group of cells that work together to accomplish a common goal is best described as what type of system?
A. mass
B. volume
C. temperature
D. density
D. density
What is a controlled variable?
any factor, trait, or condition that a researcher deliberately keeps constant throughout an experiment
What type of substance is a quartz?
Silicon (Si): dark grey solid
Oxygen Gas (02): colorless, odorless gas, required for matter to burn
Quartz (SiO2): Colorless or colored crystalline solid (does not easily react with air or water)
A. Element
B. mixture
C. compound
D. suspension
C. compound
What type of system is a food web?
A. closed
B. open
C. hub spoke
B. open
What is a dependent variable?
the specific factor being measured, observed, or tested in a scientific experiment, which changes in response to manipulations of the independent variable.
Which of the following never changes during a chemical change?
A. arrangement of atoms
B. number of molecules
C. total number of atoms
D. color of the reactants
C. total number of atoms
matter can not be created or destroyed
Which of the following is the best example of a system?
A. a bird nest
B. a group of workers that work independently at their desk
C. a bunch a bees working to together to make a hive
D. a single screw in a car
C. a bunch a bees working to together to make a hive
If a student wanted to measure the volume of water remaining, what would be the best to use?
A. spring scale
B. graduated cylinder
C. a beaker
D. triple beam balance
B. graduated cylinder
Which of the following is an example of chemical change?
A. a chunk of metal being hammered flat
B. a solid rock melting into magma
C. a piece of chalk turning into powder
D. an iron bridge turning brownish over the years
D. an iron bridge turning brownish over the years
it is undergoing rusting
Shelby is studying a chemical reaction in which sodium (Na) and chlorine (Cl) react to produce sodium chloride (NaCl). Which of these equations represents this equation?
A. NACl------ NA +Cl
B. NA+ CL-------NACl
C. NA+NACl------Cl
D. NA + Cl+ NACl---------2NACl
NA+ CL-------NACl
Melting is a?
A. phase and chemical change
B. only a chemical change
C. phase and physical change
D. only a physical change
C. phase and physical change
What are the reactants in the chemical reaction that forms rust.
A. water, iron, and oxygen
B. Rust and carbon dioxide
C. rust
D. water and oxygen
A. water, iron, and oxygen
when iron rusts, it undergoes a chemical reaction where water, iron, and oxygen combine together in the presence of moisture to form oxide (rust)