World Geography (6th)
This imaginary 0-degree line of latitude circles the middle of the Earth and divides it into the Northern and Southern Hemispheres.
What is The Equator
Located between the Tigris and Euphrates Rivers, this region is often called the "Cradle of Civilization."
What is Mesopotamia?
This positively charged subatomic particle is found inside the nucleus of an atom and determines the element's atomic number.
What is a proton?
Represented by the symbol O, this element makes up about 21% of Earth's atmosphere and is vital for human respiration.
What is Oxygen?
The 16th President of the United States who led the nation through the Civil War and issued the Emancipation Proclamation.
Who is Abraham Lincoln?
This term describes the zero-degree line of longitude that runs through Greenwich, England, dividing the Eastern and Western Hemispheres.
What is the Prime Meridian
Ancient Egyptian written language used pictorial symbols called this, which were decoded using the Rosetta Stone.
What are hieroglyphics?
These negatively charged subatomic particles orbit the nucleus and are involved in chemical bonding.
What are electrons?
Rows on the periodic table are called periods, while the vertical columns are known by this name and group elements with similar chemical properties.
What are groups (or families)?
The year 1776 is famous in American History for the adoption of this document written primarily by Thomas Jefferson.
What is the Declaration of Independence?
This physical feature, formed by tectonic plates colliding, separates the Indian subcontinent from the rest of Asia and contains Mt. Everest.
What are the Himalayas (or Himalayan Mountains)?
This Greek city-state was famous for inventing direct democracy and valuing philosophy, art, and rhetoric.
What is Athens?
Formed when two or more atoms chemically bond together (like H20 and or CO2), this is the smallest fundamental unit of a chemical compound.
What is a molecule
Elements on the periodic table are broadly classified into three categories: metals, nonmetals, and this middle category that shares properties of both.
What are metalloids (or semimetals)?
This 19th-century invention by Eli Whitney processed cotton fibers rapidly, driving both economic growth and the expansion of slavery in the South.
What is the Cotton Gin?
This geographic term refers to a narrow strip of land connecting two larger landmasses, like the one in Panama.
What is an isthmus?
The Pax Romana was a 200-year period of relative peace and stability that began under this first official Roman Emperor.
Who is Augustus Caesar (Octavian)?
Unlike physical changes, this type of change results in the formation of entirely new substances with different properties (e.g., rusting iron or burning wood).
What is a chemical change?
This unreactive group of elements found in Column 18 includes helium, neon, and argon.
What are noble gases?
Investigative journalists and writers during the Progressive Era who exposed corruption, unsafe working conditions, and social injustices were given this nickname by Teddy Roosevelt.
Who are Muckrakers?
The map projection most commonly seen in classrooms, known for distorting the size of landmasses near the poles (like Greenland), is named after this 16th-century cartographer.
What is the Mercator Projection?
This ancient trade route connected Han Dynasty China with the Mediterranean world, allowing for the exchange of goods, silk, and ideas.
What is the Silk Road?
Atoms of the same element that have the same number of protons but different numbers of neutrons are called this.
What are isotopes?
Taking its symbol Fe from the Latin word ferrum, this abundant metal element formed the backbone of the American Industrial Revolution.
What is Iron?
Ratified in 1920 at the culmination of the Progressive Movement, this Constitutional Amendment granted women the right to vote across the nation.
What is the 19th Amendment?