Blue whales live in oceans. What type of factors do they rely on for their existence?

Both biotic and abiotic factors

Neither biotic nor abiotic factors

Gail’s cross-country coach advised her to eat well-balanced meals in order to have plenty of energy for their upcoming track meet. To which transformation of energy is Gail’s coach referring?

chemical energy to mechanical energy

heat energy to mechanical energy

mechanical energy to electrical energy

thermodynamic energy to dynamic energy

What type of weather would you expect if a warm front is moving through your area?

Several days of light rain followed by warm, humid weather

Several days of strong thunderstorms followed by hot, dry weather

Fast-moving, strong thunderstorms followed by warm, humid weather

No precipitation but a sudden change from cool weather to warm weather

Which of the following would cause a hurricane to weaken?

Quickly moving through the Gulf of Mexico

Which type of interaction exists between shrimp and blue crabs in this food web?

Shrimp compete with blue crabs for food.

Shrimp help blue crabs filter polluted water.

Shrimp decompose matter for blue crabs.

Which of the following is a chemical change that takes place in the digestive system?

Starches are broken down into sugars.

Undigested material is expelled from the body.

Water is separated from solids.

Sugar is dissolved and absorbed into the bloodstream.

The elements fluorine, chlorine, bromine, and iodine are all found in the same group (17) on the table. These elements are grouped together because they –

Have the same number of valence electrons

Have the same number of electron shells

Which example best describes Newton’s third law of motion?

When a passenger stepped from a boat to the shore, the boat moved away from the shore.

When a glass slid across a table, it spilled water when it stopped suddenly.

An engine used less work to move a lighter car than when it moved a heavier car.

A bowling ball rolled in a straight path when it was thrown towards bowling pins.

The three vehicles shown are all traveling at a speed of 15 m/s, but only the pickup truck has a changing velocity. The pickup truck has a changing velocity because the pickup truck --

is traveling on a curve in the road

can accelerate faster than the other two vehicles

is traveling in the opposite direction from the other two vehicles

needs a large amount of force to move

Two cars with different masses travel at the same speed down a hill toward a stop sign. What will happen when both cars apply brakes at the same time to stop?

The car with the smaller mass will require less force to stop than the car with the larger mass.

The car with the larger mass will maintain its velocity while traveling down the hill.

The car with the smaller mass will take longer to stop than the car with the larger mass.

The car with the larger mass will have less inertia than the car with the smaller mass.

The diagram below shows the beaks of five species of birds that developed over time from one parent species. Which of the following best explains why the beak shape of each species of bird developed differently?

Each beak shape is an adaptation to a specific source of food.

Each beak shape helps the birds to produce different songs.

Each beak shape is designed to construct a different type of nest.

Each beak shape helps protect the birds from a different predator.

A toy train engine rests motionless on a track. One student begins pushing the engine to the right with a force of 2 newtons. At the same time, another student begins pushing the engine to the left with a force of 5 newtons. Which of the following best describes the resulting motion of the engine?

It travels left at an increasing speed.

It travels left at a constant speed.

It travels right at a constant speed.

It travels right at an increasing speed.

Which of the following best summarizes a fundamental concept of the cell theory?

Living organisms are composed of one or more cells.

Cells break down complex molecules to produce energy.

Cells are able to regulate their internal environment.

Living organisms rely on specialized cells to maintain health.

Which sample equation best illustrates the law of conservation of mass?

4 g reactant U + 3 g reactant V → 7 g product W

12 g reactant X +10 g reactant Y → 2 g product Z

5g reactant E + 5g reactant F → 20g product G + 5g product H

10 g reactant Q + 9 g reactant R → 90 g product S + 90 g product T

The early development of the theory of plate tectonics was supported by which of these observations?

matching fossils on the continents of Africa and South America

glacier deposits far from existing continental glaciers

thick sediment layers at the mouths of rivers

the sudden volcanic activity of long-dormant volcanoes

8th Science STAAR Review

Quiz

•

Science

•

8th Grade

•

Practice Problem

•

Hard

•

NGSS

MS-PS3-1, MS-PS2-2, MS-ESS1-1

+22

Standards-aligned

Alyza Rivers

Used 401+ times

FREE Resource

46 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is classified as an element?

NaCl

CO

Na

H₂O

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which part of the atom determines the element’s identity?

Atoms

Neutrons

Protons

Electrons

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A student rides a bicycle down a hill. At which point do the student and the bicycle have the most potential energy?

1

2

3

4

Tags

NGSS.MS-PS2-4

NGSS.MS-PS3-2

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A student rode a bicycle 15 miles in 90 minutes. What was the student’s average speed in miles per hour?

10 mph

17 mph

20 mph

30 mph

Tags

NGSS.MS-PS3-1

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following keeps Earth in its orbit?

the rotation of Earth

the gravity of the sun

the revolution of the moon

the gravity of the moon

Tags

NGSS.MS-ESS1-2

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What unit do scientists use to measure size and distance in space?

Kilometers

Miles

Light Years

Moon units

Tags

NGSS.MS-ESS1-3

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Mushrooms and yeasts are classified together in the fungi kingdom. Specific characteristics are used to classify these organisms. Which of the following is a characteristic used to classify these organisms as fungi?

They are parasites.

They are unicellular.

They are prokaryotes.

They are heterotrophs.

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8th Science STAAR Review

46 questions

Which of the following is classified as an element?

Which part of the atom determines the element’s identity?

A student rides a bicycle down a hill. At which point do the student and the bicycle have the most potential energy?

A student rode a bicycle 15 miles in 90 minutes. What was the student’s average speed in miles per hour?

Which of the following keeps Earth in its orbit?

What unit do scientists use to measure size and distance in space?

Mushrooms and yeasts are classified together in the fungi kingdom. Specific characteristics are used to classify these organisms. Which of the following is a characteristic used to classify these organisms as fungi?

Blue whales live in oceans. What type of factors do they rely on for their existence?

A metal body of mass 189 g occupies a volume of 70 cm3. Identify the metal. Use the chart below and identify what metal you have.

Which of the following compounds is considered an organic compound?

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