Chemistry
Protons are ______________ charged particles.
What are the four main Earth layers?
Crust, mantle, outer core, inner core
How many wavelengths pass through a point in one second at 3000Hz?
3000 wavelengths
How many food chains are in a food web?
More than one
State three lab safety rules.
Any.
Hydrogen ions and hydroxide ions combine to form what?
Water
What is continental drift?
The theory that the continents drift apart over millenia
Distinguish between series and parallel circuits.
Series - single continuous circuit
Parallel - multiple adjoined circuit pathways
What species interaction refers to both species benefiting?
Mutualism
Name the 8 science labs.
G101, G102, G106, G107, G108, E21, K102, K305
Which element is in Period 4, Group 2?
Calcium
At which boundary type does subduction occur?
Convergent
Warm air is less __________ than cool air, allowing it to ____________.
dense, rise
Define ecosystem.
The interactions between biotic and abiotic factors in a particular location
What are the five science night categories?
SI, CS, EA, E&T and CC.
A cluster of two protons and two neutrons ejected from a nucleus is what type of decay?
Alpha
What process moves hot rock toward the crust and cooler rock toward the core?
Convection currents
Loudness is detected by the what of the sound wave?
Amplitude
Hamsters are warm blooded. They are also called an?
Endotherm
Define IV, DV and CVs.
IV - changing variable. DV - measured variable. CVs - controlled variables.
Balance the following: H2SO4 + NaOH -> Na2SO4 + H2O.
H2SO4 + 2NaOH -> Na2SO4 + 2H2O.
Name 3 pieces of evidence used by Alfred Wegener for continental drift.
Coastlines fit together like a jigsaw, fossils found on different continents, mountain ranges appear to separate on continents where they were once joined or evidence of coal found in the poles and glaciers in the tropics.
Why are there less higher order consumers in an ecosystem than lower order consumers?
Because energy is lost at each trophic level due to use by the organism (approx. 90%).
What is the nature of science?
To question, then hypothesise, experiment and record and analyse observations and critique methodology