General Science Flashcards
The innermost layer of Earth is?
An iron core.
When did the Earth form?
4.6 billion years ago.
The lithosphere is?
Relatively light and uppermost.
Mountains are parts of Earth’s?
Crust
Which of the following is the primary driving force behind ocean tides?
The moon
The Earth’s mantle?
Is between the crust and the core.
Most of the rock at Earth’s surface is?
Sedimentary.
Slate is a dark, metamorphic rock whose sedimentary precursor was?
Shale.
How long does it take the global atmosphere to circulate?
One year.
What ultimately drives the circulation of the atmosphere and ocean?
The Sun
The timescale for the entire ocean to mix is about?
One thousand years.
Why do oceans have waves, but small ponds do not?
The surface area of a pond is not large enough for wind to create waves.
Soil is thickest, generally, where?
climate is coldest.
Which of the following is true in biological classification?
Genus has many species.
What is an invasive species?
A nonnative species that is introduced from elsewhere and spreads.