2017 STAAR Grade 8 Science

Last updated about 4 years ago

42 questions

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SCI.8.11a

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2017 STAAR Grade 8 Science

2017 STAAR Grade 8 Science

What is the total number of protons, neutrons, and electrons in a cadmium, Cd, atom that has a mass number of 112?

Record your answer and fill in the bubbles on your answer document. Be sure to use the correct place value.

Rift valleys can form when fractures in Earth’s crust widen. The valley walls slowly move at a rate of only a few millimeters a year.

Which of these best describes the type of tectonic activity that forms rift valleys?

Part of a human body system is pictured.

The main function of this system is to —

A student learns that the sun is classified as a medium-size star and that many stars are much bigger and brighter. However, the student observes that other stars look very dim, even through a telescope.

Why do other stars look much dimmer than the sun?

A partial mountain forest food web is shown.

Which statement does NOT describe a relationship shown in the food web?

A bicycle rider is traveling up a hill. When the rider reaches the top of the hill, she stops to rest. Then she travels down the hill. The diagram shows the rider in the three different positions.

Which of these correctly describes the potential energy and the kinetic energy of the bicycle rider?

A scientist added bacteria and a nutrient medium that could support the growth of the bacteria to a sterilized petri dish. No other materials were added. The graph models growth of the bacteria over time.

Which of these most likely explains why the bacterial population stopped growing?

Which statement correctly describes the location and charge of the electrons in an atom?

A student’s model of an area near a city depicts many activities that affect the quality of the water in the area.

How does the agricultural activity most likely affect the surface water of the area?

The table lists some compounds found in foods and their formulas.

Based on this information, which of these statements is NOT true?

The diagram below shows parts of a cell.

Which organelle stores the information that determines an individual’s blood type?

The unusual strength of a glue makes it able to hold a heavy object, or load, as shown in the diagram below.

If the load exerts a strong downward force, the glue —

Students in a science class made ball-and-stick models of the substances they were studying. The key shows the elements the students used in their models.

Which model represents an organic compound?

A student listed how different parts of the body work to aid in the digestion of food.

Which of the following is a chemical change that occurs to the food?

A meteor moving 468 km per minute traveling in a south-to-north direction passed near Earth in 2013. Because the meteor was only 45 m wide and was 27,700 km above Earth’s surface, it was not visible without the aid of a telescope.

Which statement describes the meteor’s motion?

A chemist made the table below to record some atomic properties of four elements.

Based on the information in the table, which conclusion about the chemical reactivity of these elements is valid?

Students in a science class in Marfa, Texas, made a poster with a diagram to represent a seasonal change in the Northern Hemisphere.

Which statement best describes conditions for Earth at Position 1 in the diagram?

Two forces are applied to a 17 kg box, as shown. The box is on a smooth surface.

Which statement best describes the acceleration of the box?

Students in a science class visited four local ecosystems. The students observed the species present in each ecosystem and recorded their observations in the table.

Based on these observations, which ecosystem is likely to be the least sustainable?

The map shows some of Earth’s plate tectonic boundaries.

Based on the map, volcanic activity would most likely be found at —

A golfer collected data on the distance a golf cart traveled in a straight line and plotted it on a graph.

Which of these does NOT describe the cart’s motion on this graph?

Which pair of properties describes the elements in Group 18?

Two friends want to go for a night hike when there is a full moon in July.

If there is a third-quarter moon on July 2, what is the approximate date of the next full moon?

What is the total number of protons, neutrons, and electrons in a cadmium, Cd, atom that has a mass number of 112?

Record your answer and fill in the bubbles on your answer document. Be sure to use the correct place value.

Which of the following is most likely to cause a change in the genetic traits in an isolated population of a ground-dwelling lizard species?

A student kicks a soccer ball three times. Another student records the distance, the amount of time the ball travels, and the average speed in the table shown below.

How many seconds did it take for the ball to travel 30 m during Kick 3?

A coastal area that once supported a thriving fishing industry is overfished. The number of species found living in the marine ecosystem decreases.

Which of these activities is most likely to increase the natural biodiversity in the area?

A manufacturer selected a metal to use in producing a lightweight button for clothing. A metal that has a density of 2.71 g/cm3 was selected.

Which of the metals was selected?

A partial marine food web is shown.

Which organisms all consume the same producer?

Barnard’s Star is about 5.9 light-years from the sun. The star has an approximate temperature of 2,800 K.

Based on the diagram, what spectral class does Barnard’s Star belong to?

A leaf fell from a tree branch. The path it followed is shown in the diagram below.

Which of these best describes why the leaf fell in a crooked path instead of straight down?

The strangler fig is a vine that starts out as a seed in the tree canopy of the rain forest. It drops its roots down from the canopy to the forest floor.

By sprouting in the rain-forest canopy, the strangler fig seedling is exposed to more —

A student is using colored beads to make a model of aluminum sulfate, Al (SO ) 2 4 3. Aluminum atoms are represented by blue beads, sulfur atoms by yellow beads, and oxygen atoms by green beads.

What combination of beads should the student use for the model?

Based on the data, which periodic table shows the correct location of the four elements?

Which of the following diagrams shows the next four moon phases in the correct order?

2017 STAAR Grade 8 Science

2017 STAAR Grade 8 Science

What is the total number of protons, neutrons, and electrons in a cadmium, Cd, atom that has a mass number of 112? Record your answer and fill in the bubbles on your answer document. Be sure to use the correct place value.

Rift valleys can form when fractures in Earth’s crust widen. The valley walls slowly move at a rate of only a few millimeters a year. Which of these best describes the type of tectonic activity that forms rift valleys?

Part of a human body system is pictured.The main function of this system is to —

A student learns that the sun is classified as a medium-size star and that many stars are much bigger and brighter. However, the student observes that other stars look very dim, even through a telescope.Why do other stars look much dimmer than the sun?

A partial mountain forest food web is shown.Which statement does NOT describe a relationship shown in the food web?

A bicycle rider is traveling up a hill. When the rider reaches the top of the hill, she stops to rest. Then she travels down the hill. The diagram shows the rider in the three different positions.Which of these correctly describes the potential energy and the kinetic energy of the bicycle rider?

A scientist added bacteria and a nutrient medium that could support the growth of the bacteria to a sterilized petri dish. No other materials were added. The graph models growth of the bacteria over time.Which of these most likely explains why the bacterial population stopped growing?

Which statement correctly describes the location and charge of the electrons in an atom?

A student’s model of an area near a city depicts many activities that affect the quality of the water in the area.How does the agricultural activity most likely affect the surface water of the area?

The table lists some compounds found in foods and their formulas.Based on this information, which of these statements is NOT true?

The diagram below shows parts of a cell.Which organelle stores the information that determines an individual’s blood type?

The unusual strength of a glue makes it able to hold a heavy object, or load, as shown in the diagram below.If the load exerts a strong downward force, the glue —

Students in a science class made ball-and-stick models of the substances they were studying. The key shows the elements the students used in their models.Which model represents an organic compound?

A student listed how different parts of the body work to aid in the digestion of food.Which of the following is a chemical change that occurs to the food?

A meteor moving 468 km per minute traveling in a south-to-north direction passed near Earth in 2013. Because the meteor was only 45 m wide and was 27,700 km above Earth’s surface, it was not visible without the aid of a telescope. Which statement describes the meteor’s motion?

A chemist made the table below to record some atomic properties of four elements.Based on the information in the table, which conclusion about the chemical reactivity of these elements is valid?

Students in a science class in Marfa, Texas, made a poster with a diagram to represent a seasonal change in the Northern Hemisphere.Which statement best describes conditions for Earth at Position 1 in the diagram?

Two forces are applied to a 17 kg box, as shown. The box is on a smooth surface.Which statement best describes the acceleration of the box?

Students in a science class visited four local ecosystems. The students observed the species present in each ecosystem and recorded their observations in the table.Based on these observations, which ecosystem is likely to be the least sustainable?

The map shows some of Earth’s plate tectonic boundaries.Based on the map, volcanic activity would most likely be found at —

A golfer collected data on the distance a golf cart traveled in a straight line and plotted it on a graph.Which of these does NOT describe the cart’s motion on this graph?

Which pair of properties describes the elements in Group 18?

Two friends want to go for a night hike when there is a full moon in July.If there is a third-quarter moon on July 2, what is the approximate date of the next full moon?

What is the total number of protons, neutrons, and electrons in a cadmium, Cd, atom that has a mass number of 112? Record your answer and fill in the bubbles on your answer document. Be sure to use the correct place value.

Which of the following is most likely to cause a change in the genetic traits in an isolated population of a ground-dwelling lizard species?

A student kicks a soccer ball three times. Another student records the distance, the amount of time the ball travels, and the average speed in the table shown below.How many seconds did it take for the ball to travel 30 m during Kick 3?

A coastal area that once supported a thriving fishing industry is overfished. The number of species found living in the marine ecosystem decreases.Which of these activities is most likely to increase the natural biodiversity in the area?

A manufacturer selected a metal to use in producing a lightweight button for clothing. A metal that has a density of 2.71 g/cm3 was selected.Which of the metals was selected?

A partial marine food web is shown.Which organisms all consume the same producer?

Barnard’s Star is about 5.9 light-years from the sun. The star has an approximate temperature of 2,800 K.Based on the diagram, what spectral class does Barnard’s Star belong to?

A leaf fell from a tree branch. The path it followed is shown in the diagram below.Which of these best describes why the leaf fell in a crooked path instead of straight down?

The strangler fig is a vine that starts out as a seed in the tree canopy of the rain forest. It drops its roots down from the canopy to the forest floor.By sprouting in the rain-forest canopy, the strangler fig seedling is exposed to more —

A student is using colored beads to make a model of aluminum sulfate, Al (SO ) 2 4 3. Aluminum atoms are represented by blue beads, sulfur atoms by yellow beads, and oxygen atoms by green beads.What combination of beads should the student use for the model?

Based on the data, which periodic table shows the correct location of the four elements?

Which of the following diagrams shows the next four moon phases in the correct order?

What is the total number of protons, neutrons, and electrons in a cadmium, Cd, atom that has a mass number of 112?

Record your answer and fill in the bubbles on your answer document. Be sure to use the correct place value.

Rift valleys can form when fractures in Earth’s crust widen. The valley walls slowly move at a rate of only a few millimeters a year.

Which of these best describes the type of tectonic activity that forms rift valleys?

Part of a human body system is pictured.

The main function of this system is to —

A student learns that the sun is classified as a medium-size star and that many stars are much bigger and brighter. However, the student observes that other stars look very dim, even through a telescope.

Why do other stars look much dimmer than the sun?

A partial mountain forest food web is shown.

Which statement does NOT describe a relationship shown in the food web?

A bicycle rider is traveling up a hill. When the rider reaches the top of the hill, she stops to rest. Then she travels down the hill. The diagram shows the rider in the three different positions.

Which of these correctly describes the potential energy and the kinetic energy of the bicycle rider?

A scientist added bacteria and a nutrient medium that could support the growth of the bacteria to a sterilized petri dish. No other materials were added. The graph models growth of the bacteria over time.

Which of these most likely explains why the bacterial population stopped growing?

A student’s model of an area near a city depicts many activities that affect the quality of the water in the area.

How does the agricultural activity most likely affect the surface water of the area?

The table lists some compounds found in foods and their formulas.

Based on this information, which of these statements is NOT true?

The diagram below shows parts of a cell.

Which organelle stores the information that determines an individual’s blood type?

The unusual strength of a glue makes it able to hold a heavy object, or load, as shown in the diagram below.

If the load exerts a strong downward force, the glue —

Students in a science class made ball-and-stick models of the substances they were studying. The key shows the elements the students used in their models.

Which model represents an organic compound?

A student listed how different parts of the body work to aid in the digestion of food.

Which of the following is a chemical change that occurs to the food?

A meteor moving 468 km per minute traveling in a south-to-north direction passed near Earth in 2013. Because the meteor was only 45 m wide and was 27,700 km above Earth’s surface, it was not visible without the aid of a telescope.

Which statement describes the meteor’s motion?

A chemist made the table below to record some atomic properties of four elements.

Based on the information in the table, which conclusion about the chemical reactivity of these elements is valid?

Students in a science class in Marfa, Texas, made a poster with a diagram to represent a seasonal change in the Northern Hemisphere.

Which statement best describes conditions for Earth at Position 1 in the diagram?

Two forces are applied to a 17 kg box, as shown. The box is on a smooth surface.

Which statement best describes the acceleration of the box?

Students in a science class visited four local ecosystems. The students observed the species present in each ecosystem and recorded their observations in the table.

Based on these observations, which ecosystem is likely to be the least sustainable?

The map shows some of Earth’s plate tectonic boundaries.

Based on the map, volcanic activity would most likely be found at —

A golfer collected data on the distance a golf cart traveled in a straight line and plotted it on a graph.

Which of these does NOT describe the cart’s motion on this graph?

Two friends want to go for a night hike when there is a full moon in July.

If there is a third-quarter moon on July 2, what is the approximate date of the next full moon?

What is the total number of protons, neutrons, and electrons in a cadmium, Cd, atom that has a mass number of 112?

Record your answer and fill in the bubbles on your answer document. Be sure to use the correct place value.

A student kicks a soccer ball three times. Another student records the distance, the amount of time the ball travels, and the average speed in the table shown below.

How many seconds did it take for the ball to travel 30 m during Kick 3?

A coastal area that once supported a thriving fishing industry is overfished. The number of species found living in the marine ecosystem decreases.

Which of these activities is most likely to increase the natural biodiversity in the area?

A manufacturer selected a metal to use in producing a lightweight button for clothing. A metal that has a density of 2.71 g/cm3 was selected.

Which of the metals was selected?

A partial marine food web is shown.

Which organisms all consume the same producer?

Barnard’s Star is about 5.9 light-years from the sun. The star has an approximate temperature of 2,800 K.

Based on the diagram, what spectral class does Barnard’s Star belong to?

A leaf fell from a tree branch. The path it followed is shown in the diagram below.

Which of these best describes why the leaf fell in a crooked path instead of straight down?

The strangler fig is a vine that starts out as a seed in the tree canopy of the rain forest. It drops its roots down from the canopy to the forest floor.

By sprouting in the rain-forest canopy, the strangler fig seedling is exposed to more —

A student is using colored beads to make a model of aluminum sulfate, Al (SO ) 2 4 3. Aluminum atoms are represented by blue beads, sulfur atoms by yellow beads, and oxygen atoms by green beads.

What combination of beads should the student use for the model?