8th Grade CAST Review

Crest

• The lowest point of a wave below the resting point

• The highest point of a wave above the resting point

• The distance between two consecutive crests

• The speed at which a wave travels

Tags

NGSS.MS-PS4-1

Frequency

• The speed at which a wave travels through a medium

• The distance between two consecutive peaks of a wave

• In a wave, the number of wave cycles that pass a given point in a given time

• The amplitude of a wave measured from its rest position

Chromosomal mutation

• Mutation that affects the number or structure of whole chromosomes

• A change in a single nucleotide in the DNA sequence

• A mutation that occurs only in somatic cells

• A mutation that is inherited from one parent

Tags

NGSS.HS-LS3-2

Balanced forces

• No Change in velocity

• Increase in speed

• Decrease in speed

• Change in direction

Newton's Second Law

• Force equals mass multiplied by acceleration.

• Force equals mass divided by acceleration.

• Force equals acceleration divided by mass.

• Force equals mass plus acceleration.

Newton's Third Law

• For every action there is an equal and opposite reaction.

• An object in motion stays in motion unless acted upon by an external force.

• The force of gravity is proportional to the mass of the objects involved.

• Energy cannot be created or destroyed, only transformed.

Tags

NGSS.MS-PS2-1

Diffraction

• The bending of a wave as it moves around an obstacle or passes through a narrow opening

• The reflection of waves off a surface

• The absorption of waves by a medium

• The scattering of waves in different directions

Tags

NGSS.MS-PS4-2

Contact force

• A type of force that acts at a distance

• A push or pull on one object by another object

• A force that only occurs in a vacuum

• A force that is always attractive

Wave

• A wave is a disturbance that carries energy from place to place.

• A wave is a type of particle that moves through a medium.

• A wave is a static force that does not transfer energy.

• A wave is a phenomenon that only occurs in water.

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Gravitational force

• The force of attraction between all masses in the universe

• A force that repels objects away from each other

• The force that keeps planets in orbit around the sun

• A force that only affects large objects like planets and stars

Tags

NGSS.MS-ESS1-1

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

NGSS.MS-PS2-5