Results for "geometric"

Filters

Flashcards

Typeface Geometric
Updated 10d ago
flashcards Flashcards (6)
CRUDE/BIRTHRATE - The number of children born alive each year per 1,000 population (often shortened to birth rate). DEATH RATE - The yearly number of deaths per 1,000 population. DEMOGRAPHIC TRANSITION - The phasing-out process of population growth rates from a virtually stagnant growth stage characterized by high birthrates and death rates, through a rapid-growth stage with high birthrates and low death rates, to a stable, low-growth stage in which both birth and death rates are low. DOUBLING TIME - Period that a given population or other q by itauantity takes to increase by its present size. FAMILY-PLANNING PROGRAMS - Public programs designed to help parents plan and regulate their family size in accordance with their ability to support a family. FERTILITY RATE - A population is the average number of children that are born to a woman over her lifetime, if they were to experience the exact current age-specific fertility rates through their lifetime, and they were to live from birth until the end of their reproductive life. HIDDEN MOMENTUM OF POPULATION GROWTH - A dynamic latent process of population increase that continues even after a fall in birthrates, because of a large youthful population that widens the population's parent base. LIFE EXPECTANCY AT BIRTH - The number of years newborn children would live if subject to the mortality risks prevailing for the cross section of population at the time of their birth. MALTHUSIAN POPULATION TRAP - An inevitable an inevitable population level envisaged by thomas malthus (1766 1834) at which population increase was bound to stop because after that level, life-sustaining resources, which increase arithmetic rate, would be insufficient to support human population, which increases a geometric rate. MICROECONOMIC THEORY OF FERTILITY - An extension of the theory of consumer behavior of individual couples MORTALITY OR DEATH RATE - Is the proportion of a population who die of a defined cause. NATURAL INCREASE - The difference between the birth rate and death rate of a given population NET INTERNATIONAL MIGRATION - The excess of persons migrating into a country over those who emigrate from that country POPULATION-POVERTY CYCLE - A theory to explain how poverty and high population growth POPULATION PYRAMID - Graphical depiction of the age structure of the population, with age cohort plotted on the vertical axis and numbers of males and females in each cohort on the horizontal axis. RATE OF POPULATION INCREASE - The growth rate of a population, calculated as the natural increase after adjusting for immigration and emigration REPRODUCTIVE CHOICE - Means that women have a right to choose whether or not to reproduce, including the right to decide whether to carry or terminate an unwanted pregnancy and the right to choose their preferred method of family planning and contraception. TOTAL FERTILITY RATE (TFR) - The number of children that would be born to a women if she were live to the end of her childbreaing years and bear children accordance with the prevailing age-specific fertility rates. THE UNDER-5 MORTALITY RATE - Refers to the probability a newborn would die before reaching exactly 5 years of age, expressed per 1,000 live births. YOUTH DEPENDENCY RATIO - The proportion of young people under age 15 to the working population aged 16-64 in a country
Updated 11d ago
flashcards Flashcards (8)
Geometric Series
Updated 11d ago
flashcards Flashcards (4)
**Properties of Matter** - **Physical vs Chemical Properties** - *Physical Properties:* Can be observed without changing the substance (e.g., color, density, melting point, boiling point) - *Chemical Properties:* Describe a substanceā€™s ability to undergo chemical changes (e.g., flammability, reactivity with acid) - **Examples of Each** - Physical: Ice melting, water boiling, density, solubility - Chemical: Rusting iron, burning wood, tarnishing silver - **Intensive vs Extensive Properties** - *Intensive:* Do not depend on the amount of matter (e.g., density, boiling point, color) - *Extensive:* Depend on the amount of matter (e.g., mass, volume, length) --- **Density** - **Definition, Units, and Formula** - Density (Ļ) = Mass (m) / Volume (V) - Units: g/cmĀ³ (solids), g/mL (liquids), kg/mĀ³ (gases) - **Comparison of Densities** - Solids: Generally highest density - Liquids: Lower density than solids but higher than gases - Gases: Lowest density - **Solid: Regular vs Irregular Shape** - *Regular Shape:* Use geometric formulas to find volume - *Irregular Shape:* Use water displacement method - **Factors Affecting Density** - Temperature (increase decreases density for most substances) - Pressure (affects gases significantly) - Composition (different materials have different densities) --- **Elements, Compounds, and Mixtures** - **Matter: Definition and Examples** - Anything that has mass and takes up space (e.g., air, water, rocks) - **Pure vs Impure Matter** - *Pure:* Elements and compounds (e.g., oxygen, water) - *Impure:* Mixtures (e.g., saltwater, air) - **Atom vs Element** - *Atom:* Smallest unit of an element - *Element:* Substance made of one type of atom - **Compounds vs Mixtures** - *Compounds:* Chemically bonded elements (e.g., H2O, CO2) - *Mixtures:* Physically combined substances (e.g., salad, air) - **Types of Mixtures** - Homogeneous (solutions, uniform throughout) - Heterogeneous (distinct parts, not uniform) - **Examples of Mixtures** - Homogeneous: Saltwater, air - Heterogeneous: Salad, granite --- **Solubility** - **Solutions** - *Parts:* Solute (dissolved substance) + Solvent (dissolving substance) - *Examples:* Saltwater (solute: salt, solvent: water) - **Effect of Temperature and Pressure** - Higher temperature increases solubility of solids in liquids - Higher pressure increases solubility of gases in liquids - **Gases vs Liquids** - Gases dissolve better in cold liquids under high pressure - Liquids dissolve better at higher temperatures - **Gaseous, Liquid, and Solid Solutions** - Gaseous: Air (oxygen in nitrogen) - Liquid: Saltwater (NaCl in H2O) - Solid: Alloys (brass, steel) - **Concentrations** - Unsaturated: Can dissolve more solute - Saturated: Maximum solute dissolved - Supersaturated: Holds more than normally possible - **Solubility Curve** - Shows solubility vs temperature - Higher points indicate higher solubility --- **The Mole** - **Avogadroā€™s Number** - 6.022 x 10^23 particles per mole - **Molar Mass** - Mass of one mole of a substance (g/mol) - **Particle, Mass, and Mole Calculations** - Particle calculations: Using Avogadroā€™s number - Mass calculations: Converting between grams and moles - Mole calculations: Determining amount of substance - **Moles at STP (Standard Temperature and Pressure)** - 1 mole of gas = 22.4 L at STP - **Atomic Mass Units (AMU)** - Unit for atomic/molecular mass --- **Labs** - **Density Lab** - Measure mass and volume, calculate density - Compare densities of different materials - **Elements, Compounds, and Mixtures Lab** - Classify substances based on their properties - **Mystery Powder Lab** - Identify unknown substances using solubility and reactions - **Cornstarch Lab** - Explore properties of non-Newtonian fluids This guide covers essential concepts in matter, density, solubility, and the mole, along with relevant lab activities
Updated 24d ago
flashcards Flashcards (8)
Physics lens
Updated 37d ago
flashcards Flashcards (10)
Unit 6 Variables
Updated 38d ago
flashcards Flashcards (15)
D4H4 - MICROSCOPIE
Updated 40d ago
flashcards Flashcards (33)
D4H2 - OPTICA
Updated 40d ago
flashcards Flashcards (55)
0.00
studied byStudied by 0 people