STAAR PRACTICE 1

Which statement about the sun is true?

• It is the hottest star in the universe.

• It is closer to Earth than any other star.

• It is located in the center of the Milky Way galaxy.

• It is the largest type of star known to exist.

Which statement BEST describes a component of cell theory?

• All cells form from molecules.

• All cells come from preexisting cells.

• All cells create genetically identical cells.

• All cells reproduce from simpler cells.

Which prediction can be made about a forest after a controlled burn has occurred?

• The ability of plants to reproduce will decrease.

• Important nutrients for new plant growth will be returned to the soil.

• Short-term air quality in the area will improve.

• Long-term biodiversity will be reduced.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

NGSS.MS-LS1-5

Which statement BEST explains why baking a cake is evidence of a chemical reaction?

• The state of matter of some of the ingredients changed while being cooked.

• The total mass of the ingredients was the same before and after they were cooked.

• The temperature of the ingredients increased as they absorbed thermal energy from the oven.

• The ingredients formed a new substance after they were cooked in the oven.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which factor contributes MOST to the formation of a hurricane?

• High water temperatures

• High water density

• High water oxygen levels

• High water volume

Tags

NGSS.MS-ESS2-6

A student researches an ecosystem and draws the food web shown. How many secondary consumers are in this food web?

• 2

• 3

• 4

• 5

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-2

A student graphs the motion of a toy car moving in a straight line over a 10-second time period. Which statement BEST describes the motion of the car?

• The car moved at a speed of 5 meters per second during the first 5 seconds and then moved at a slower speed during the next 5 seconds.

• The car moved at a speed of 5 meters per second during the first 5 seconds and then moved at a faster speed during the next 5 seconds.

• The car moved at a speed of 1 meter per second during the first 5 seconds and then moved at a slower speed during the next 5 seconds.

• The car moved at a speed of 1 meter per second during the first 5 seconds and then moved at a faster speed during the next 5 seconds.

Tags

NGSS.MS-PS3-1

A student draws models of Earth and the sun in different positions. Which drawing should be used to represent summer in the Southern Hemisphere?

• A

• B

• C

• D

Tags

NGSS.MS-ESS1-1

How many different elements are in the chemical equation?

• 2

• 4

• 13

• 50

Tags

NGSS.MS-PS1-1

Which two organisms compete with rabbits for biotic resources?

• Coyotes and wolves

• Goats and mice

• Goats and wolves

• Snakes and owls

Tags

NGSS.MS-LS2-1