Notes, summaries, assignments, exams, and problems for Secondary education

.All material objects are composed of atoms. An atom consists of a nucleus and a vast region of space outside the nucleus. Electrons are present in the region of space outside the nuclues. Electrons are often removed from and a dded to an atom by normal everyday occurrences. The nucleus contains positively-chargedd protons and nuetral neutrons. These prtons and nuentrons are not removable or disturbable by usual everyday methods. One sure truth of this unit is that the porotn and neutron will remain within the nucleus of the atom.
Methods of charging:-friction:Having an excess of electrons thr rubber ballon is charged negatively.The shortage of electrons on the animal fur leaves it with a positive charge.-Induction: is a very common method of... Continue reading "Basic Principles of Electricity and Atomic Physics" »

7-As nadadeiras dos peixes podem apresentar funções variadas de acordo com adaptações ocorridas ao longo dos tempos. Podem ser usadas para, exceto: Respirar

8- Na reprodução dos vertebrados inferiores, predominam os processos de: Fecundação externa

9-No Aparelho excretor dos peixes, os rins são do tipo: Mesonéfrico

1- Entre os peixes e os primeiros anfíbios foram necessários 40 milhões de anos de lenta e constante evolução.

Todas as alternativas contêm adaptações surgidas durante essa evolução, exceto : Manutenção da pele úmida, Termo regulação.

4- Os únicos animais que apresentam, ao longo da vida, respiração branquial, cutânea e pulmonar são os: Pererecas

7- um animal, vivendo no ambiente terrestre e utilizando a pele... Continue reading "Cola" »

Skeletal System: Functions and Joints

Skeletal System Functions

• Support the body structure.
• Protect vital organs.
• Provide points of attachment for muscles.
• Manufacture blood cells (hematopoiesis).
• Store calcium and phosphorus.

Joints: Connections Between Bones

Joints are places where bones connect. They are classified by the degree of movement they permit:

• Fixed Joints (Synarthroses): Do not permit movement (e.g., skull sutures).
• Slightly Movable Joints (Amphiarthroses): Allow limited movement (e.g., vertebrae).
• Freely Movable Joints (Diarthroses): Allow bone movement in all directions (e.g., knee).

Sensory Receptors and Stimuli Perception

Types of Receptors

• Internal Receptors (Interoceptors): Perceive changes occurring inside the body (e.g., blood pressure,

Business and General Vocabulary

Exhibitions and Trade Shows

• brochure
• business card
• competitor
• exhibition
• free gift
• leaflet
• LED screen
• name tag
• promotional material
• stand (noun)

Countries and Nationalities

• American / USA
• Britain / British
• France / French
• Germany / German
• Ireland / Irish
• Italy / Italian
• Japan / Japanese
• Nigeria / Nigerian
• Peru / Peruvian
• Thailand / Thai

Weather Terminology

• cloudy
• cold
• cool
• freezing
• hot
• rainy
• snowy
• stormy
• sunny
• warm
• windy

Transportation and Travel

General Transport Methods

• aeroplane
• bus
• ferry
• motorbike
• ship
• taxi
• train
• tram
• underground

Giving Directions

• bus stop
• catch a bus
• cross (verb)
• entrance
• exit (noun)
• get off
• get on
• junction
• pass (verb)
• platform
• route map
• sign (noun)
• traffic light
• train station
• zebra crossing

Booking Flights

• arrival
• book a flight
• business class
• departure
• direct

Adaptation of Xylem to its Function

• Long, made from cells joined end to end to form tubes/vessels
• Cell walls thickened with lignin, a hard, strong material
• Lignin makes cell walls waterproof
• Cells have no cytoplasm or organelles (no cell contents)
• No end-to-end walls between cells
• Pits in the walls for water movement between vessels

Define Transpiration

Loss of water vapor from plant leaves by evaporation of water at the surfaces of the mesophyll cells followed by diffusion of water vapor through the stomata.

Leaves have many more stomata in their lower epidermis than they do in their upper epidermis, and most transpiration happens there.

Factors Affecting Transpiration

• The large internal surface area provided by the interconnecting air spaces between

Physical Health and Fitness Vocabulary

• To work out (hacer ejercicio)
• To bulk up (aumentar musculatura)
• To stretch the legs (calentar)
• To warm up
• To shift some weight
• To slim down
• To shed pounds
• To get rid of one's spare tire
• To pull a muscle (dañar)
• To take up (hobby)
• Unfit
• Complexion
• Therapeutics
• Junk food
• Tablet
• Stamina
• Ripped (musculado)
• To get in shape
• Down in the dumps (depresivo)
• Overweight
• Illness
• Pill (pastilla pequeña)
• Put on weight (ganar peso)
• Tone up
• To be keen on (interesado)
• Speed
• Endurance
• Push-up (flexión)
• Jumping jacks
• Elbow crunches (rotación de codo)
• To wear off (dolor o sentimiento)
• Settle down (calma)
• Body fat (grasa corporal)
• Blood pressure
• Fatty food
• Overeating
• Squats
• Hip rotation

Mental Health Vocabulary

• Anxiety
• Depression
• Stress
• Therapist
• Self-esteem
• Mindfulness

Early Settlements in Southern Mesopotamia

Settlements began in southern Mesopotamia around 5000 BCE. The earliest cities emerged from these initial settlements.

Three Distinct Types of Mesopotamian Cities

Historians identify three primary kinds of cities that developed during this era:

1. Cities developed around temples.
2. Cities developed as trade centers.
3. Imperial cities.

The Architecture and Purpose of Early Temples

The earliest temple was a small shrine made of unbaked bricks. Temples were considered the residence of gods; for instance, significant structures were built for the Moon God of Ur and the Goddess of Love and War, Inanna. These eventually grew into large temples featuring several rooms, courtyards, and reinforced outer walls.

The Temple as

Chartism: A Working-Class Movement

Chartism was a working-class movement that emerged in 19th-century Britain, advocating for political reform and social justice. The working-class people, who were not among the wealthiest, aimed to create a fairer society for themselves and others like them. They were named Chartists after the People's Charter.

Origins of Chartism

Chartism emerged in London in 1836 and quickly expanded across the country, with its most active period between 1838 and 1848. The Chartists publicized their demands through meetings and pamphlets. Several factors contributed to its rise:

• Rapid urbanization in British society led to unsanitary living conditions and long working hours for the working class.
• Only a small portion of the