Precambrian Era & the Brain
100 — This part of the brain helps you make good decisions.
A: What is the prefrontal cortex?
100 — Warm ocean currents make nearby climates more ________.
A: What is humid / rainy?
100 — This layer of Earth is the thin outermost part.
A: What is the crust?
100 — A question that can be tested is called a ______ question.
A: What is a scientific question?
Wildfires are getting worse today partly because forests are becoming more ______ due to warmer temperatures.
Answer: What is drier?
200 — Early Earth’s atmosphere had lots of this gas instead of oxygen.
What is carbon dioxide (CO₂)?
200 — Air that rises creates this type of pressure.
A: What is low pressure?
200 — This type of volcano is the most explosive.
A: What is a composite volcano?
200 — An educated guess written as an “if…then…” statement.
A: What is a hypothesis?
In the salinity station, objects float easier in salt water because salt water has more ______.
Answer: What is density?
300 — This brain part controls breathing and heartbeat.
A: What is the brain stem?
300 — Air that sinks creates this type of pressure.
A: What is high pressure?
300 — This Earth layer is made of liquid metal.
A: What is the outer core?
300 — The variable you change on purpose.
A: What is the independent variable?
300 — Wildfires release this gas, which increases global warming.
A: What is carbon dioxide (CO₂)?
400 — These tiny organisms were the first to release oxygen into Earth’s atmosphere.
A: What are cyanobacteria?
400 — Earth’s rotation causes winds to curve. This is called the ______.
A: What is the Coriolis effect?
400 — Most volcanoes form along these boundaries.
A: What are tectonic plate boundaries?
400 — The variable you measure or observe.
A: What is the dependent variable?
400 — Tides happen mainly because of the pull of the ______.
A: What is the Moon?
500 — This emotion center of the brain controls fear and anger.
A: What is the amygdala?
500 — Winds blow from ______ pressure to ______ pressure.
A: What is high to low?
500 — The Earth layer made of hot, slowly flowing rock is the ______.
A: What is the mantle?
500 — The final summary explaining what you learned from an experiment.
A: What is the conclusion?
After rain falls on land, how does it eventually make its way back to the ocean?
Answer: It flows downhill as runoff into rivers and streams, which carry the water back to the ocean.