List the six main regions of the Earth, in order, starting from the center

What will be an ideal response?


core, mantle, crust, hydrosphere, atmosphere, magnetosphere

Physics & Space Science

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The line intensity of a spectrum depends both on the abundance of a particular element and its temperature as well

Indicate whether the statement is true or false

Physics & Space Science

If I = 0.40 A in the circuit segment shown below, what is the potential difference Va ? Vb?



a.
31 V

b.
28 V

c.
25 V

d.
34 V

e.
10 V

Physics & Space Science

This diagram summarizes modern particle classification. Where do protons, neutrons, and electrons, the particles that make atoms, fit in?

A) Protons and neutrons are made of quarks, while electrons are leptons. B) Protons and neutrons are quarks, while electrons are leptons. C) Protons and neutrons are fermions, while electrons are bosons. D) Protons, neutrons, and electrons have a separate classification scheme; they are made neither of fermions nor bosons.

Physics & Space Science

What temperature has the Big Bang has cooled to by now?

A) About 3,000 K B) 5,800 K C) About 300 K D) Just over 2.7K E) 1.4 K

Physics & Space Science