Which statement best describes the relationship between thermal energy and particle motion?

• Thermal energy decreases as particle motion increases

• Thermal energy does not affect particle motion

• Thermal energy increases as particle motion increases

• Particle motion remains constant regardless of thermal energy

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

In a watershed ecosystem, what would most likely happen if all the trees were removed?

• Soil quality would improve

• Erosion would increase significantly

• Groundwater levels would rise

• Air temperature would decrease

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

What is the primary reason scientists use multiple trials in their experiments?

• To make the experiment take longer

• To use up extra materials

• To reduce experimental error

• To confuse other scientists

How does distance affect gravitational force between two objects?

• As distance increases, gravitational force increases

• As distance increases, gravitational force decreases

• Distance has no effect on gravitational force

• Gravitational force only works at certain distances

Which best explains why Earth has seasons?

• Earth's tilted axis and its revolution around the Sun

• The Sun gets hotter and colder throughout the year

• Earth moving closer to and farther from the Sun

• Changes in Earth's rotation speed

Tags

NGSS.MS-ESS1-1

What happens to most of the energy in a food chain?

• It is stored forever in plants

• It is transformed into water

• It is lost as heat at each transfer

• It increases at each level

Tags

NGSS.MS-LS2-3

When a solid changes directly to a gas, this process is called:

• Condensation

• Sublimation

• Evaporation

• Melting

Tags

NGSS.MS-PS1-4

Which factor would most affect the size of ocean waves?

• Ocean depth

• Wind speed and duration

• Water temperature

• Moon phase

In a closed system, what happens to the total amount of matter?

• It gradually increases

• It stays the same

• It slowly decreases

• It changes based on temperature

Tags

NGSS.MS-PS1-5

What is the main function of mitochondria in cells?

• Store genetic information

• Produce energy for the cell

• Control what enters and exits the cell

• Create proteins

Tags

NGSS.MS-LS1-2