Core exam 2 Prep

The transfer of heat via electromagnetic waves is called:

• Conduction

• Convection

• Radiation

• Insulation

The characteristic gas equation states that:

• PV = nRT

• F = ma

• V = IR

Atoms consist of:

• protons, neutrons, and electrons

• molecules and compounds

• cells and tissues

• planets and stars

What is produced when metals react with acids?

• Salt and water

• Salt and hydrogen gas

• Metal oxide and water

• Metal hydroxide and hydrogen gas

The accuracy of a measurement refers to:

• The closeness of a measured value to a standard or known value.

• The ability to obtain the same measurement repeatedly.

• The range within which a measurement is considered valid.

• The smallest change that can be detected by a measurement instrument.

How accurate are Vernier callipers?

• 0.2 mm

• 0.02 mm

• 1 mm

• 0.002 mm

State what is meant by the scientific method.

• A systematic approach to research and experimentation

• A random guess or hypothesis

• A philosophical theory

• A historical event

The purpose of testing within the scientific method is to:

• validate hypotheses and theories through experimentation and observation.

• gather data without any specific aim or hypothesis.

• prove that a hypothesis is correct without any doubt.

• ignore previous research and start from scratch.

A quantity that has both magnitude and direction is called a:

• Scalar

• Vector

• Matrix

• Tensor

Polar coordinates are represented as:

• (r, θ)

• (x, y)

• (a, b)

• (p, q)