Science STAAR Test

• Student 1 traveled 40 m, and student 2 traveled 20 m.

• Student 1 traveled 50 m, and student 2 traveled 30 m.

• Student 1 traveled 60 m, and student 2 traveled 30 m.

• Student 1 traveled 70 m, and student 2 traveled 25 m.

• Diptera

• Isoptera

• Ephemeroptera

• Zoraptera

Tags

NGSS.MS-LS4-2

• Action: The force of the bird on the wires Reaction: The force of the wires on the fence post

• Action: The force of the wires on the fence post Reaction: The force of the fence post on the bird

• Action: The force of the fence post on the bird Reaction: The force of the bird on the wires

• Action: The force of the bird on the fence post Reaction: The force of the fence post on the bird

Tags

NGSS.MS-PS2-1

Farmers can best reduce negative effects on the water quality of nearby streams and lakes by planting crops that —

• produce less oxygen

• produce less carbon dioxide

• need less fertilizer

• need less solar energy

Tags

NGSS.MS-LS2-5

Buffelgrass is an invasive species of grass from Africa that outcompetes native Texas grasses for space and water. Which long-term change to a Texas grassland would most likely occur due to the introduction of buffelgrass?

• The population of native grasses will increase.

• The population of native grasses will decrease.

• Buffelgrass offspring will develop traits like those of native grasses.

• Buffelgrass offspring will develop traits like those of other invasive species.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

• Main sequence

• White dwarf

• Blue giant

• Red giant

A student added white crystals to a clear liquid. The crystals dissolved in the liquid. After a few seconds, the liquid became quite warm and then turned bright red in color. The first indication that a chemical change was taking place could be observed when?

• The crystals were added to the liquid.

• The crystals dissolved in the liquid.

• The temperature of the liquid increased.

• The color of the mixture changed.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Scientists test for the hardness of a mineral by doing which of the following?

• Measuring the mass of the mineral, and comparing it against other minerals.

• Observing how light reflects off the mineral and how the mineral look as a result.

• Observing the color of a mineral and comparing it against other minerals.

• Scratching the mineral against other substances of known hardness.

Students are investigating changes from potential to kinetic energy by rolling a marble down a ramp made by propping up a plastic ruler on a book and letting it roll down. Which of the following will change the potential energy the marble starts with?

• Switching the plastic ruler with a wooden one

• Adding more books and increasing the height of the ruler

• Pushing the marble down the ramp

• Replace the marble with a rock

Tags

NGSS.MS-PS3-2

Which of the following three elements are most abundant in the plants and animals that make up the biosphere?

• Sulfur, oxygen, and hydrogen

• Nitrogen, silicon, and oxygen

• Phosphorous, oxygen, and iron

• Oxygen, carbon, and hydrogen

Tags

NGSS.HS-LS2-5