3rd Nine Weeks Benchmark Study Guide

The law of conservation of energy tells us that _______________________.

• Energy cannot be created or destroyed, only transformed.

• Energy is created constantly.

• Energy is lost over time.

• Energy is not conserved.

Identify the correct sequence of terms related to a chemical equation: Reactant, Product, Coefficient, and Subscript.

• Reactant, Product, Coefficient, Subscript

• Product, Coefficient, Reactant, Ion

• Subscript, Molecule, Coefficient, Charge

• Element, Reactant, Factor, Product

According to the law of conservation, calculate the missing mass. 15g + _g=20g+10g

• 30g

• 15g

• 5g

• 20g

In the following heating curve, the boiling point is represented by what letter?

• a

• b

• c

• d

• e

In the following heating curve, the point at which the matter is a liquid is represented by what letter?

• a

• b

• c

• d

• e

In the following heating curve, the point at which the matter is a solid is represented by what letter?

• a

• b

• c

• d

• e

Waves that do not require a medium are called _________.

• electromagnetic.

• mechanical waves.

• sound waves.

• pressure waves.

Identify the two types of waves based on how their particles move in the medium:

• Longitudinal: particles move parallel; Transverse: particles move perpendicular

• Longitudinal: particles move perpendicular; Transverse: particles move parallel

• Longitudinal: particles oscillate in circles; Transverse: particles oscillate in ellipses

• Longitudinal: particles do not oscillate; Transverse: particles oscillate along a diagonal

Describe what happens to the wavelength of a wave if the frequency increases? What if the frequency decreases?

• Wavelength decreases, wavelength increases.

• Wavelength increases, wavelength decreases.

• Wavelength remains constant, wavelength remains constant.

• Wavelength decreases, wavelength decreases.

Reflection: (mirror).

• When waves pass through

• When waves are absorbed

• When waves want to bounce back

• When waves bend