Historical Detectives
A letter written by a soldier during a war is this type of source
primary source
Put these dates in chronological order: 200 CE, 500 BCE, 100 BCE, 50 CE.
500 BCE → 100 BCE → 50 CE → 200 CE.
Earth is this numbered planet from the Sun.
third planet
The Amazon Rainforest is located on this continent.
South America
A history textbook written hundreds of years after an event is this type of source.
secondary source
Which happened earlier: 800 BCE or 300 BCE?
800 BCE.
Approximately this percentage of Earth's surface is covered by water.
70%
What is the name of the German scientist that developed the continental drift theory?
What year
Alfred Wegner in 1912
This person studies the past mainly by examining artifacts and physical remains.
an archaeologist
Which date happened earlier: 500 BC or 200 BC?
Answer: What is 500 BC?
500 BC
Name Earth's major layers from the outside toward the center.
Crust → mantle → outer core → inner core.
Once the continents were one whole piece, what was it called?
Pangea
A photograph taken during a historical event would normally be classified as this.
primary source
An event happened in 300 BC, and another event happened in 200 AD. Which event happened first?
300 BC
This is the thin outer layer of Earth where we live.
the crust
What is the deepest point in the ocean called?
the Mariana Trench
An archaeologist discovers pottery, tools, and remains of buildings but no written records. Explain one thing these artifacts could reveal about the people who lived there.
Their daily life, technology, food, jobs, culture, trade, beliefs
A civilization began in 600 BCE and another began in 200 BCE. Which civilization began first, and approximately how much earlier?
The civilization beginning in 600 BCE; approximately 400 years earlier.
two tectonic plates glide against each other, causes?
Earthquake
What is the deepest point in the Mariana Trench called?
The Challenger Deep
A historian claims that Earth's continents have always been exactly where they are today. You have maps, matching fossils from different continents, similar rock formations, and evidence of tectonic plate movement. Using what you've learned, explain why the historian's claim is weak.
The claim is weak because evidence supports continental drift. Matching fossils and rock formations on separated continents suggest they were once connected as part of Pangaea, and tectonic plates continue to move Earth's crust.