Module 6 Flashcards
Temperature on a reaction rate
Thiosulfate and HCL in reaction
Observations: solid sulfur will precipitate out as a colloid (solid in suspension) gaseous SO2 will effervesce (bubble)
Risk Assessment
Temperature/Pressure on the volume of a gas
Ideal Gas Equation
PV = nRT
P= Pressure
V= Volume
n= amount (moles)
R= universal gas constant
T= temperature
T – P and T – V are directly proportional
Speed on distance travelled
Newtons Laws
An object in motion stays in motion, and an object at rest stays at rest, unless a nett force acts upon it Law of Inertia
F=ma when mass is a constant
For every action there is an equal and opposite reaction Law of Conservation of Momentum
Distance
The magnitude or size of displacement between two positions m
Time
Time is change, or the interval over which change occurs s
Speed
The rate of change of position of an object in any direction m/s
Mass
a dimensionless quantity representing the amount of matter in a particle or object kg
Force
the push or pull on an object with mass causes it to change its velocity kg/m/s (Newton)
Acceleration
the rate of change of the velocity of an object with respect to time m/s2
Inertia
an object will continue its current motion until some force causes its speed or direction to change kg/m2
Momentum
a measurement of mass in motion: how much mass is in how much motion kg m/s
Limitations of technologies
Natural: natural limits are ones where the laws of the universe physically prevent us from doing something
Economic: It’s possible that certain things are within the reach of technology but are so expensive that they’re completely impractical.
Ethical: There are ethical concerns around genetic engineering, cloning, artificial intelligence, surveillance, cybernetics, and biological warfare. People question whether it’s right to change people’s genetics, to play God, to remove privacy, and to improve the technology of warfare.
Random and systemic errors
Random error introduces variability between different measurements of the same thing, while systematic error skews your measurement away from the true value in a specific direction.
Analogue and digital technologies
The difference between analogue and digital technologies is that in analogue technology, information is translated into electrical pulses of varying amplitude. In digital technology, translation of information is into binary format (zero or one) where each bit is representative of two distinct amplitudes.
The impact that developments in technologies have had on the scientific theories laws and models:
computerised simulations and models of the Earth’s geological history
modelling have helped geologists model the Earth’s motions with increasing accuracy. They can track the various stresses on the crust and the movements of the mantle.
X-ray diffraction and the discovery of the structure of deoxyribonucleic acid (DNA)
Photo 51 demonstrated the double-helix structure of deoxyribonucleic acid: the molecule containing the genetic instructions for the development of all living organisms.
technology to detect radioactivity and the development of atomic theory
the Hadron collider and discovery of the Higgs boson
particle collider which discovered in 2012 the new particle Higgs boson
Aboriginal bush medicine, new drug treatments
Eucalyptus trees and their medical products
over-the-counter cough and cold products to relieve congestion. Eucalyptus oil is also used in creams and ointments to relieve muscle and joint pain, and in some mouthwashes.
