Which question is most relevant to an ecosystem beginning primary succession?

Why is there no soil, grass, or shrubs present in the ecosystem?

Why are there so many kinds of animals living in the ecosystem?

What types of hardwood trees are growing in the ecosystem?

What caused the forest fire that destroyed the previous ecosystem?

Provides energy for cell functions

Storage and transport of molecules

Certain species of yeast can reproduce sexually or asexually. Which answer choice best compares the offspring from sexual reproduction to the offspring from asexual reproduction?

Offspring of sexual reproduction are genetically different from either parent and offspring of asexual reproduction are identical to the parent.

Offspring of sexual reproduction are larger than offspring of asexual reproduction.

Offspring of sexual reproduction have twice as much genetic material as the offspring of asexual reproduction.

Offspring of sexual reproduction are genetically identical to each other and offspring of asexual reproduction are genetically different from each other.

Gregor Mendel studied the genetics of pea plants. He found that some pea plants produce smooth, round seeds, while other pea plants produce rough, wrinkled seeds. Which cellular feature determines whather a pea plant produces smooth or wrinkled seeds?

Information present in chromosomes in the nucleus

Information located in the plasma membrane

Instructions found in proteins of the cytoplasm

Chemical signals released by mitochondria

Students are baking a cake. They mix together all the necessary ingredients and pour them into a pan. Then they place the pan into the oven to cook for 40 minutes. Which statement BEST explains why baking a cake is evidence of a chemical reaction?

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

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.

Student 1 claims that whenever the color of a substance changes, a chemical change has occurred. Student 2 claims that food coloring can change the color of a substance without causing a chemical change. To test their claims, the students add red food coloring to a glass of water. The students observe that the clear water turns a light pink color. Their teacher then runs a test to show that the pink solution contains both water molecules and food-coloring molecules. Based on these findings, which statement is correct?

Student 2, because no new substance was formed when there was a color change

Student 1, because the food-coloring molecules were found in the pink solution

Student 1, because the state of matter changed when the food coloring was added

Student 2, because the red food coloring caused the water to change to a pink color

A tennis ball is dropped down a stairwell. Which statement BEST describes the energy of the tennis ball?

The tennis ball has the most potential energy just before it dropped.

The tennis ball's kinetic energy decreases as it falls to the ground.

The tennis ball has the most kinetic energy as soon as it is dropped.

The tennis ball's potential energy increases as it falls to the ground.

2024 STAAR Questions

Quiz

•

Science

•

8th Grade

•

Practice Problem

•

Medium

•

NGSS

MS-PS1-2, MS-PS3-2, MS-PS3-1

+12

Standards-aligned

Xavier Dunlap

Used 6+ times

FREE Resource

16 questions

Show all answers

1.

REORDER QUESTION

1 min • 1 pt

Match the following

Metalloid

Nonmetal

Metal

Tags

NGSS.MS-PS1-1

2.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Bamboo

English Elm

Plum

Box

Tags

NGSS.MS-PS1-2

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Tags

NGSS.MS-PS2-4

NGSS.MS-PS3-2

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Object 1, because it travels the greatest distance per unit of time

Object 1, because it travels the longer amount of time

Object 2, because it travels the shorter amount of time

Object 2, because it travels the shorter distance per unit of time

Tags

NGSS.MS-PS3-1

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which action represents a conversion of chemical energy into mechanical energy?

Pancakes reheated in a microwave oven

Soup beginning to boil on a stove

A grasshopper jumping from predator

Sunlight melting an icicle

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Part A:
Students make plans to construct an ecosystem in a large aquarium. Four ecosystem plans are listed. All plans include soil and water. Which ecosystem is MOST LIKELY to be sustainable?

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Part B:
Based on the answer to the last question, which statement supports the answer to Part A?

Plants provide ecosystems with energy

Fish maintain water quality in ecosystems

Ecosystems with more species are more sustainable

Ecosystems with fewer species are better able to survive

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-5

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2024 STAAR Questions

16 questions

Match the following

Which action represents a conversion of chemical energy into mechanical energy?

Part A:Students make plans to construct an ecosystem in a large aquarium. Four ecosystem plans are listed. All plans include soil and water. Which ecosystem is MOST LIKELY to be sustainable?

Part B: Based on the answer to the last question, which statement supports the answer to Part A?

Which question is most relevant to an ecosystem beginning primary succession?

​ (a) ​ ​ (b) ​ ​ ​ ​ (c)

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Part A:
Students make plans to construct an ecosystem in a large aquarium. Four ecosystem plans are listed. All plans include soil and water. Which ecosystem is MOST LIKELY to be sustainable?

Part B:
Based on the answer to the last question, which statement supports the answer to Part A?

(a) (b)
(c)