Physics
What is a vector quantity?
The gain of electrons is known as.
What is reduction?
Bacteria turns atmospheric nitrogen into a form plants can use.
What is nitrogen fixation?
These rocks form as a result of volcanic activities.
What are igneous rocks?
A falling tennis ball represents this type of motion.
What is non-uniform motion?
Josephine ran 5.0km in 46 minutes. Her average speed in m/s is.
What is 1.8m/s?
A chemical reaction that turns chemical potential energy to electrical energy is know as.
What is a spontaneous reaction?
What is mutualism?
An increase of 2.0 on the Richter Scale represents an increase of this many times in strength.
What is 100x?
Examples of this type of factor include commensalism, mutualism, predation and parasitism.
What are biotic factors?
or
What are symbiotic relationships?
The slope of a distance-time graph and the area underneath the line of an acceleration-time graph represent this.
what is speed?
This volume of an 18mol/L stock solution of HCl is needed to prepare 100mL of a 2.00mol/L diluted solution.
What is 11mL?
Soil pH, soil composition, soil temperature are all specific examples of this type of factor.
What are edaphic abiotic factors?
The four layers of the Earth (crust, inner core, outer core, mantle) put in order of increasing density are.
What is the solid inner core, liquid outer core, mantle and crust?
Evidence for this theory include: paleomagnetism, fossil records, jig-saw like coastlines of different continents.
What is plate tectonics?
Carey pushes a 10kg block and causes it to accelerate at a rate of +5.0m/s2. The force Carey applied and the law of motion demonstrated by Carey is.
What are +50N and Newton's 2nd law of motion?
A bottle of wine has a 12.5% alcohol concentration. This means a 750mL bottle has this much alcohol.
What is 93.8mL?
After a forest fire, this type of succession occurs.
What is secondary succession?
This can provide the relative age of a fossil.
What is index fossil?
or
What is the law of superposition?
Energy is put into this type of reaction to get chemical reactions to occur.
What are non-spontaneous reactions?
When you throw an egg against a bedsheet, this is happening to the impulse.
What is nothing (no change)?
In the complete combustion of propane (C3H8), if there are 15mols of oxygen present, how many moles of water vapour will be produced?
What is 12 moles?
DDT is a pesticide used in our ecosystems. From the food chain below, this organism will be the most at risk.
phytoplankton --> krill --> penguin --> fox
What are foxes?
C-14's half-life is 5730 years. After 17190 years, the amount of daughter material (N-14) will be present from an original 20.0g sample of C-14.
What is 17.5g?
When 80.0g of NaOH are used to prepare 2.0L of solution, the concentration of the solution is this.
What is 1.0mol/L?