Phys
What are the five fundamental quantities?
Length, Time, (Thermodynamic) Temperature, Electric Current, Mass
Name three natural hazards that can occur in the Caribbean.
Hurricane, Drought, Tropical Storm, Volcano, Earthquake, Tornado, Landslide, Mudflow, Tropical Depression, Tsunami etc.
What is a predator?
A predator is an organism that hunts, stalks and kills another organism (prey).
What is Matter?
Matter is anything that has mass and occupies space.
What direction is 112.5⁰ using the 16-point compass?
112.5⁰= ESE
What are five different types of waves?
Transverse, Longitudinal, Sound, UV, Light, Water, Electromagnetic, Heat, P, S
Name two characteristics that make a disaster.
When 10 or more deaths occur, 100 people are reported affected, a state of emergency is declared, more than 5 days without basic necessities, a call is made for international assistance
Name three reasons why classification is important.
To eliminate confusion and error with a species identity, To differentiate between organisms that are similar, To assist in the identification of common ancestors
State the volume of each state of matter.
Solids have constant volume.
Liquids have constant / definite volume.
Gases have variable volume (fills any space available).
What is an oscillation? State its alternate name.
An oscillation (cycle) is one full trough and one full crest.
What is a wavelength in a longitudinal wave?
A wavelength is the distance between consecutive compressions and consecutive rarefactions.
What are two aspects/factors of vulnerability?
Poor design and construction of buildings, Inadequate protection of assets, Lack of public information and awareness, Limited official recognition of risks and preparedness measures, Disregard for wise environmental management
Grasshopper--> Caterpillar--> Frog--> Hawk
If the caterpillar population migrated to a new habitat, explain the effects of this on the rest of the food chain.
Grasshopper population begins to increase, Frog population begins to decrease, Hawk population begins to slowly decrease
True or False
If a non-volatile solute is present in a liquid, the boiling point of a liquid would be higher than its normal boiling point
True
Why do some solids sublime?
The interparticle forces are weaker in some solids, allowing them to sublime.
What is Amplitude?
Amplitude is the maximum displacement of the particle from the equilibrium position.
Why would people place themselves at Risk? Explain two reasons.
Emotional Ties- sacred/religious place, land passed down, sentimental value
High Cost Of Living- cannot afford to live in safer places
Lack of Knowledge
Russian Roulette
What is a Niche?
The role/function an organism has in its biotic/abiotic environment.
The boiling point of a pure liquid is the same as the __________ point of a _______ ______.
The boiling point of a pure liquid is the same as the condensation point of a pure gas.
What is Osmosis?
Osmosis is the net movement of watee molecules from an area of high water to an area of low water through a semi-permeable membrane until water molecules are evenly distributed on both sides of the membrane.
If the unit for acceleration is ms-2, calculate the force of an object with a mass of 1300g and an acceleration of 40 ms-2.
1300g -> kg= 1.3kg
Force= mass × acceleration
Force= 1.3kg × 40ms-2
Force= 52 kgms-2 OR 52 Newtons (N)
What is the difference between vulnerability and risk?
Vulnerability refers to the characteristics of a community that makes it susceptible to possible damaging effects of a hazard. It is the degree at which you or an area is at risk.
Risk, however, is the potential disaster losses (loss of life, health, assets) which could occur to a particular community over a specified future time period.
Give an example of either a Coelenterate or a Echinoderm and give any distinctive feature.
Coelenterate: Examples: jellyfish, coral
Feature: gut has a single opening (the mouth), bag or umbrella shaped body, ring of tentacles around mouth.
Echinoderm: Examples: starfish, sea urchin, sand dollar
Feature: Body wall contains CaCO3 plates, usually have a spiny surface, body based on a pattern of five parts
What is Brownian Motion?
Brownian Motion is the random haphazard motion of solid particles when placed in a fluid (a substance that can flow); due to collisions between solid particles and the invisible fluid particles.
How many Trophic Levels are there? Give the names for all.
There are 5 Trophic Levels. Producers, Primary Consumers, Secondary Consumers, Tertiary Consumers and Quarternary Consumers.