Elements of an Experiment
What is a control group?
A group in an experiment that is not being tested
When were cars invented?
1886
Who created the airplane?
Orville and Wilbur Wright
What is parts per million?
A unit of measurement used to describe units/1,000,000
What is pollution?
The introduction of harmful materials or energy into the natural environment.
What is a dependent variable?
A variable in an experiment that depends on the independent variable.
What is the role of transportation in agriculture?
It helps ship goods from farms to markets.
When was the first airplane successfully invented?
December 17 1903
What does ppm stand for?
Parts per million
What was Isaac Newtons 1st law of motion?
An object at rest remains at rest and an object in motion remains in motion unless acted upon by an unbalanced force.
What is an independent variable?
A variable that isn't changed by the other variables that are being measured.
What is agriculture?
Farming
What is genetic engineering?
A process of changing the dna of organisms using laboratory-based technologies.
What is the formula for grams per cubic centimeter?
mass (gm) = volume (cc) × density (gm/cc)
What is spacetime?
The relationship between the 3rd dimension of space and the 4th dimension of time.
What is a constant?
A factor that does not change
How did agriculture advancements affect urbanization?
By improving the food efficiency
What is nuclear fission?
When the nucleus of an atom splits into multiple nuclei
What is mechanical advantage?
Load/output:effort/imput
What is Mendelian genetics?
Inherited traits controlled by a single gene with 2 alleles. dimples, freckles, ability to taste PTC, cleft chin, albinism, hitchhiker's thumb
I test 1 cup of Froot Loops and Cheerios to see which one gets soggy first with a half cup of milk, what is the dependent variable?
the sogginess of the cereal
What technologies have been developed for use in agriculture.
robots, temperature and moisture sensors, aerial images, and GPS technology
What are negatives of nuclear fusion?
neutron radiation damage to exposed materials, causing swelling, embrittlement and fatigue
What does g/cm^3 stand for?
Grams per cubic centimeter
What is a barometer?
An instrument used to measure atmospheric pressure.