General
How many variables can be changed in an experiment
ONE
Chloroplasts and a cell walls don't exist in animal cells!
What are the parts of an atom?
Proton +
neutron 0
electron -
What is the name of the process in which cells replicate and daughter cells are identical to parent cells?
Mitosis
Define an independent variable
The independent variable is the condition that you change in an experiment. It is the variable you control. It is called independent because its value does not depend on and is not affected by the state of any other variable in the experiment.
Name 3 components of the water cycle that are NOT precipitation, evaporation, condensation.
Transpiration, sublimation, ground water, respiration, runoff, glaciers.
There are 4 nucleotide bases that pair up in DNA. Name two of them.
Guanine and Cytosine
Adenine and Thymine
Simple machines like wheel and axle, wedge, pully, or lever decrease the amount of force by increasing the distance. The purpose of simple machines is to...
make work easier. Work is actually a scientific measurement whose unit is called a Joule (J).
Name 3 components of a food web.
Producer, predator, prey, consumer, decomposer.
Define controlled variable
Factors or variables in an experiment that stay the same and stay consistent between trials.
Describe how a rock become a metamorphic rock.
through heat and pressure
Sunlight, water, air temperature, minerals
rattlesnake, soil microbes, mouse, prairie dog, cactus
Name two different types of energy.
kinetic, potential, thermal, electric, chemical, mechanical, nuclear
What is an astronomical unit?
1 AU is 149,600,000 km which is the average distance from the sun the Earth is at any given point.
You want to know how people's test scores change based on how much caffeine they consume. You give 5 scholars 2 red bulls, 5 scholars 1 cup of coffee and 5 scholars NO caffeine before a test. What is your dependent variable?
Dependent variable = test scores.
This DEPENDS on how much caffeine is consumed.
Name 2 of the layers within Earth's atmosphere.
Troposphere, stratosphere, mesosphere, thermosphere.
What is the chemical equation for photosynthesis?
6CO2+6H2O→C6H12O6+6O2
How do atoms motion change as ice melts into water and then evaporates into gas?
Vibrate in place, slide past each other, bounce around.
What PROPERTIES do you use to identify rocks and minerals?
Luster, hardness, color, texture, fracture planes, patterns.
What do you need in order to be successful on the science MCA?
-Good night's sleep
-Healthy breakfast
-headphones
-Charged chromebook
-pencil and scratch paper
-great attitude
-patience
Name an example of a weather-caused natural disaster and a geologic-caused natural disaster
weather: hurricane, tornado, flood
geologic: tsunami, earthquake, volcanic eruption
Name one of the 3 types of symbiotic relationships.
Mutualism +/+
Parasitism +/-
Commensalism +/0
Define 'Density'
Mass over volume
Mass divided by volume
Mass per volume
Why don't sound waves travel in space?
Because waves need materials (particles or atoms of a substance) to travel through!