Weather
Rain, Lighting and Cold Front are examples of?
Weather patterns
What is the scientific definition of heat?
Thermal energy that can be transferred from one object to another
Electrons are pushed from ? charge towards ? charge
Substances that produce hydroxide ions in solution are?
Bases
Exothermic
The three main greenhouse gases are?
Carbon Dioxide, Methane, nitrous oxide
The particles are spread far apart
The unit of measurement for resistance is
ohms
A base have a pH of....
Above 7
What is enthalpy?
A measure of heat energy stored in the substance
Why does snow have a higher albedo value than asphalt?
Snow is more reflective, asphalt is dark colored which absorbs more sunlight
The measurement of the average kinetic energy of particle is also know as
Temperature
A circuit in which electrical current has more than one path to follow is in....?
Parallel
What is an amphiprotic substance?
A reaction with a positive change in enthalpy is.....
Endothermic reaction
Name three renewable sources of energy.
Wind, Hydro-electric, tidal, waves, solar
Liquids and gases
What happens to the current if the resistance is increased in a circuit?
Decrease, I=V/R
What is the difference between a strong and weak acid
Number of ions produced
When an energy diagram shows a small amount of activation energy, it is a _____ reaction.
exothermic
How does ocean acidification affect marine life such as coral? (Carbonate ions)
When concentration of carbonate ions decrease, coral growth is limited as they are made up of calcium carbonate.
How does the sun transfer heat energy to Earth?
A flashlight have usefully transfer 10 Joules of energy into light energy from a supply of 40 Joules, the efficiency of the flash light is?
10/40 x 100= 25% useful energy/orig, source
Acid + Metal Carbonate produces...
Salt + CO2+ H2O
Why does endothermic reactions get colder while the enthalpy is increased?
Absorbs energy from the surroundings, use this energy to break bonds.