Social Studies 2nd Trimester Final Exam Revision Guide

What is the most abundant gas (has the highest amount of gas) in Earth's atmosphere?

• Oxygen

• Carbon dioxide

• Nitrogen

• Argon

The invention of the telescope by Galileo Galilei helped explorers primarily by:

• Navigating in foggy conditions

• Observing distant objects in the sky

• Detecting magnetic fields

• Measuring the Earth’s curvature

What is a light year?

• A unit of time

• A unit of distance - how far light (in space) travels in a year

• The speed of light in a vacuum

• The time it takes for light to travel from the Sun to Earth

The pilgrimage to Mecca, known as Hajj, must be performed:

• Every year

• Only during the month of Ramadan

• Once in a lifetime (if able)

• At least once a decade

The Abbasid Caliphate was established after overthrowing which dynasty?

• Umayyad Dynasty

• Fatimid Dynasty

• Rashidun Caliphate

• Seljuk Empire

What is the system that helps people determine exact locations?

• Telescope Mechanism

• Global Positioning System

• Lightyear Measurement System

• Astronomy

What is the similarity between manmade and natural satellites?

• They monitor the Earth’s weather conditions

• They are used to create signals

• They produce their own light

• They orbit

How can global warming affect life on Earth?

• Change in temperatures and weather patterns

• Loss of species and more health risks to humans

• Crops are affected

• All of the options

What do you call the imaginary line where the Earth meets outer space?

• Karman Line

• Stratosphere

• Ozone Layer

• Mesosphere

What is the greenhouse effect?

• The Sun’s heat is trapped in the Earth’s atmosphere

• The ozone layer blocks sunlight from reaching the Earth’s surface

• The Earth becomes healthier to live in

• Less air pollution