Which is the best example of a pure substance

• peanuts

• milk

• gold

• air

Tags

NGSS.MS-PS1-4

Which statement best explains how periods on the periodic table are organized

• increasing atomic number from left to right

• increasing number of neutrons from left to right

• decreasing number of electrons from left to right

• decreasing atomic mass number from left to right

An ice cube is put into a heated pan. What will most likely happen to the molecules in the ice as the ice is heated?

• the molecules will begin to move slower

• the molecules will begin to move faster

• the molecules will begin to increase in density

• the molecules will begin to condense in the air

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

Which best explains why the total mass of the products would be less that the total weight of the reactant after a chemical reaction?

• A physical change occurred

• Atoms involved in the reaction lost mass

• Precipitates were created in the new solution

• Gases were released into the atmosphere

Tags

NGSS.MS-PS1-5

Which would least likely have an impact on global climate changes

• producing energy using hydroelectric plants

• producing energy using coal

• producing energy using oil

• producing energy using natural gas

Tags

NGSS.MS-ESS3-4

NGSS.MS-ESS3-5

Which is an example of renewable energy resource

• biomass

• coal

• gas

• oil

Which will most likely result if there is increased upwelling in a coastal area

• more aquatic life

• less nutrients in the water

• higher water temperatures

• fewer nitrates

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Which best determines the health of a lake used as a source of freshwater?

• its depth and width

• its temperature and pH

• its location and depth

• its temperature and depth

A scientists finds the bones of a dinosaur.What could help the scientist determine the approximate age of the dinosaur bones?

• the birds living in the area of the bones

• the weather conditions in the area of the bones

• the kinds of trees living in the area of the bones

• the index fossils in the area of the bones

Tags

NGSS.MS-ESS1-4

Which best describes how ice cores are important to the study of geologic history?

• they show unconformities, which signal changes in deposition

• they hold index fossils, which are used to date the different ice cores

• they contain evidence showing changes in the atmospheric composition over time

• they follow the law of superposition, which gives reasons for extinction of species

Tags

NGSS.HS-ESS2-4

NGSS.HS-ESS2-6

NGSS.HS-ESS3-5