Earth's Layer
How many layers are there?
we’ve talked about 7 layers
What’s a volcano?
It’s an opening in the earth’s crust in which lava, gases, ash escape
What’s the thinnest layer of the Earth?
the crust
What should you do after working with bio specimens, chemicals and/or substances?
wash both hands with soap & water
The 0° line of longitude that divides the Eastern and Western Hemisphere is…
Prime Meridian
The lithosphere combines what two layers?
upper mantle & crust
Where’s the most active volcanoes?
Indonesia
What’s the correct for the layers of the earth?
inner and outer core, mantle, crust
What's the best footwear to wear in a lab?
closed toe shoes
How many parts does the equator divide the earth into?
2 parts
What layer of the Earth has the lowest temperature?
the crust (avg. temperature is between 200°C and 400°C)
Has worldwide volcanic activity been increasing in recent years?
there’s no evidence of it
Which is lighter: oceanic crust or continental crust?
continental
What’s the proper way to deal with a minor burn on your skin?
dipping the burned area in cold water
Imagery lines that run parallel are called?
lines of longitude
What’s the oceanic floor made of?
copper, zinc, nickel, gold, silver, and phosphorus
How do you know when a volcano isn’t going to erupt anymore?
When there’s no sign of an active magma chamber beneath the volcano
Where are earthquakes created?
earthquakes occur among the edges of plate tectonics
What’s the correct way to look at a test tube?
from the side
Zero degrees latitude is also called the ______.
the equator
What materials make up the inner core?
made up of iron and nickel in an alloy represented by the chemical formula (NiFe)
Why are volcanoes active even when there’s no eruption?
Scientists only consider a volcano to be active only if it is showing signs of unrest (unusual earthquake activity or significant new gas emissions)
How does a collision zone differ from a destructive plate boundary?
collision zones differ from destructive plate boundaries due to the types of crust found in each. collision zones have two continental plates, whereas destructive boundaries have one continental and one oceanic
The skull and crossbones symbol is used for which type of hazard in the lab?
acute toxicity
Lines of longitude can also be called?
meridians