8th Grade Science EOC Review

What is the law of conservation of mass in chemical reactions?

• The law of conservation of mass only applies to physical changes.

• Mass is created in a chemical reaction.

• Matter is neither created nor destroyed in a chemical reaction.

• Matter can be destroyed in a chemical reaction.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Explain the difference between potential and kinetic energy in relation to force and motion.

• Potential energy is related to motion, while kinetic energy is related to position

• Potential energy is not affected by force, while kinetic energy is affected by force

• Potential energy is only present in stationary objects, while kinetic energy is only present in moving objects

• Potential energy is related to position or state, while kinetic energy is related to motion.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-2

NGSS.MS-PS3-5

How does Newton's first law of motion apply to everyday situations?

• Objects will stop moving when no force is applied.

• Objects will change their state of motion without any external force.

• Objects will move in a straight line at a constant speed.

• Objects will continue their state of motion unless acted upon by an external force.

What are the three main types of clouds associated with weather patterns?

• nimbostratus

• cumulus, stratus, cirrus

• altostratus

• cirrostratus

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

Describe the process of condensation in the water cycle.

• The process of condensation involves water moving from clouds to the ground as precipitation.

• Condensation occurs when water droplets evaporate into the air, creating humidity.

• Water vapor in the air cools down and changes into liquid water droplets, forming clouds.

• Water vapor in the air heats up and changes into solid ice crystals, forming clouds.

Tags

NGSS.MS-ESS2-4

What is the role of catalysts in chemical reactions?

• Catalysts have no effect on chemical reactions.

• Catalysts change the products of reactions.

• Catalysts speed up reactions by lowering activation energy.

• Catalysts slow down reactions by increasing activation energy.

Tags

NGSS.HS-PS1-5

How does friction affect the motion of objects?

• Friction reduces the speed of moving objects.

• Friction causes objects to float in the air.

• Friction increases the speed of moving objects.

• Friction has no effect on the motion of objects.

Tags

NGSS.MS-PS2-2

What are the units used to measure force and motion?

• Kilograms (kg) and miles per hour (mph)

• Newtons (N) and meters per second (m/s)

• Pounds (lbs) and kilometers per hour (km/h)

• Liters (L) and centimeters (cm)

Explain the difference between weather and climate.

• Weather refers to long-term conditions while climate refers to short-term conditions

• Climate only refers to temperature while weather refers to all aspects of the atmosphere

• Weather and climate are the same thing

• The main difference between weather and climate is the timescale and spatial scale they refer to.

What are the factors that influence the speed of a chemical reaction?

• Distance between reactants

• Temperature, concentration of reactants, surface area, presence of a catalyst, pressure

• Time of day

• Color of the reactants

Tags

NGSS.HS-PS1-5

NGSS.HS-PS1-6