What is the mass number of an atom which is made up of 38 protons, 52 neutrons and 38 electrons?
A) 38
B) 52
C) 90
D) 128
C
Environmental & Atmospheric Sciences
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Which of the following is a property of light?
A. Its energy comes in packets of uniform size. B. It is a wave. C. It is a particle. D. all of the above E. none of the above
Environmental & Atmospheric Sciences
A dropped boulder gains speed due to
A. inertia. B. velocity changes. C. gravity. D. its nature to become closer to Earth.
Environmental & Atmospheric Sciences
How many interference fringes do you see? (Count the rainbow-colored
bands.) What will be an ideal response?
Environmental & Atmospheric Sciences
Most of Earth's mass of living organisms consists of which of the following?
A) Animalia B) Benthos C) Nekton D) Plankton E) Plantae
Environmental & Atmospheric Sciences