Social Science

Patterns formed by groups of stars in the night sky.

There are 88 constellations that cover the night sky.

A constellation known as Princess of Ethiopia.

A constellation known as Queen of Ethiopia.

A constellation known as King of Ethiopia.

A constellation known as the Water bearer.

A constellation known as the Sea monster (whale).

Stars are not visible during the daytime due to sunlight.

The elliptical paths that planets follow around the Sun.

The four planets closest to the Sun: Mercury, Venus, Earth, Mars.

The four planets farthest from the Sun: Jupiter, Saturn, Uranus, Neptune.

Small rocky bodies that orbit the Sun, mainly found in the asteroid belt.

Region between Mars and Jupiter where most asteroids are located.

Small pieces broken from asteroids that orbit the Sun.

Meteoroids that vaporize upon entering Earth's atmosphere, creating streaks of light.

Meteoroids that survive entering the atmosphere and land on Earth.

Rocks formed by the accumulation of sediments over time.

The Earth is estimated to be about 4.6 billion years old.

The Earth's shape, slightly flattened at the poles and bulging at the equator.

Movement of the Earth spinning on its axis, creating day and night.

Movement of the Earth around the sun in a fixed orbit.

The rigid outer part of the earth, consisting of the crust and upper mantle.

All the water on the Earth's surface, including oceans and rivers.

Rocks are classified into igneous, sedimentary, and metamorphic based on origin.

The outer layer of the Earth consisting mainly of Silicon (Si) and Magnesium (Mg), also called SIMA.

The thickest layer of the Earth, about 2,900 km thick, composed mainly of Silicon and Magnesium, known as SIMA.

The innermost layer of the Earth made mainly of Nickel (Ni) and Iron (Fe), referred to as NIFE.

The solid part of the Earth's core, where intense pressure compresses molten metal into solid form.

The liquid or semi-liquid layer of the Earth’s core, surrounding the inner core.

An acronym for Silicon and Magnesium, referring to the composition of both the oceanic crust and the mantle.

An acronym for Nickel and Iron, used to describe the composition of the Earth's core.

The Earth consists of three main layers: crust, mantle, and core.

The gradual development of humans over time from earlier species.

The science of studying human history through artifacts and fossils.

Remains of dead plants, animals, or humans preserved in rocks.

The genus that includes modern humans and their close relatives.

An extinct human species that lived from about 1.9 million years ago.

The species name for modern humans.

The period of human history before the invention of writing.

A term describing creatures that walk on two legs, like humans.

The percentage increase in a population over time, reflecting birth and death rates.

The actual reproductive performance of a population, usually measured by birth rates.

The incidence of death within a population, influencing population size.

The movement of people from one location to another, affecting population dynamics.

The number of live births per 1,000 people in a given year, a key fertility measure.

The study of how populations change in size and composition over time.

Population grew from 11.8 million in 1900 to 73.9 million by 2007, with varying growth rates.

The main factors affecting population changes: fertility, mortality, and migration.