1950s
This war ended in 1953, dividing Korea into North and South.
What is the Korean War?
What is 25 × 2?
What is 50?
The outermost solid layer of the Earth.
What is the crust?
This young singer became famous in the mid-1950s with hits like Heartbreak Hotel.
Who is Elvis Presley?
The perimeter of a square with side length 8 is this.
What is 32?
Rocks formed from cooled lava are called this.
What are igneous rocks?
This rock and roll dance craze, often done in poodle skirts, became popular.
What is the Twist?
This number is both a square and a cube.
What is 64?
This scale measures the magnitude of earthquakes.
What is the Richter scale?
This U.S. president launched the interstate highway system in 1956
Who is Dwight D. Eisenhower?
Solve for x: 2x + 6 = 14.
What is 4?
The movement of Earth’s plates is called this theory
What is plate tectonics?
This Soviet satellite, launched in 1957, started the space race.
What is Sputnik?
The value of π (pi) rounded to two decimal places.
What is 3.14?
The deepest part of the world’s oceans, found in the Pacific Ocean.
What is the Mariana Trench?