WorksheetsSTAAR 05 2025 Science
Total questions: 35
Worksheet time: 20mins
This drawing shows fossils in different layers of soil. Based on the fossils, which statement BEST describes one of the layers?
Layer 1 was a desert.
Layer 2 was an Arctic tundra.
Layer 3 was an ocean.
Layer 4 was a forest.
Students place a toy elephant on the floor in a room without windows. The students turn the room's light on and off and record their observations in the table.
Which statement describes the conditions that allow the students to see the toy?
The toy elephant is not visible.
The toy elephant glows.
The toy elephant changes color.
The toy elephant floats.
Which statements about the life cycles are correct?
The tomato plant should have a pupa stage.
Part of the mosquito life cycle occurs in water.
In all the life cycles, the young organisms look like the adult organisms.
The seed of the tomato plant is like the egg of the ladybug and the mosquito.
An adult is not needed in the plant life cycle, because plants come from seeds.
A teacher places a lamp on a small table. After the lamp is turned on, an office chair is moved near the table. The diagram shows the setup. How could a student help the teacher demonstrate the day-night cycle of Earth?
The student could sit in the chair and make the chair move around the table.
The student could sit in the chair and cause the chair to make one complete spin.
The student could sit in the chair and then the teacher could move the lamp around the chair.
The student could sit in the chair and then the teacher could walk between the student and the table.
In which environment is the Fennec Fox most likely to live?
(a)
Where is the badger most likely to live?
(b)
Where is the hare most likely to live?
(c)
Which statement BEST describes how glaciers change the surface of Earth?
A) Slow-moving rivers erode the edges of glaciers, forming deltas.
B) The force of strong winds causes melting ice from a glacier to form canyons.
C) Glaciers move slowly over the land, weathering and eroding rock layers to form valleys.
A student drops five objects into a container of water. Which statement BEST classifies some of these objects?
A) Objects 2 and 5 are more dense than water, while Objects 1 and 4 are less dense than water.
B) Objects 1 and 4 are more dense than water, while Objects 2 and 3 have the same density as water.
C) Objects 2 and 3 are less dense than water, while Object 5 is more dense than water.
D) Objects 1 and 4 are less dense than water, while Object 2 is more dense than water.
Students conduct an investigation to determine how water changes state when it is heated and cooled. They complete the steps shown in the table.
Describe how water changes state during this investigation.
The water in the beaker begins bubbling, and the amount of water decreases.
Water remains in the liquid state throughout the investigation.
Water changes from solid to liquid and then to gas.
Water changes from gas to solid without becoming liquid.
Which statement describes one way trees are dependent on nonliving parts of the environment?
Many birds build nests in trees.
Different organisms rely on trees to provide food.
Some trees need fire to release their seeds.
Trees provide shade for plants that grow near them.
Which statement BEST explains a difference between the formation of sedimentary rock and the formation of fossil fuels?
Heat is needed for the formation of fossil fuels but not for the formation of sedimentary rock.
Cementation occurs in the formation of fossil fuels but not in the formation of sedimentary rock.
Decaying organisms must be present for the formation of sedimentary rock but not for the formation of fossil fuels.
Time is needed for the formation of sedimentary rock but not for the formation of fossil fuels.
In the electric circuit shown, which lightbulbs will shine when Switch 1 is open and Switches 2 and 3 are closed?
Which statement BEST describes the sugar and water after they were mixed?
The sugar melted in the water, and the water stayed clear.
The sugar melted in the water, and the water turned white.
The sugar dissolved in the water, and the water stayed clear.
The sugar dissolved in the water, and the water turned white.
Which table correctly identifies the MOST LIKELY positions at which the student observes the sun?
How can you tell that Position 3 occurs at noon and Position 2 occurs in the afternoon?
The sun is visible in the sky during the day and not visible in the sky during the night.
The sun is low in the sky when it is far from Earth and high in the sky when it is close to Earth.
The sun's rotation causes its position to change from east to west throughout the day.
Earth's rotation causes the apparent movement of the sun from east to west.
Which statement BEST explains the answer to Part A?
The sun is visible in the sky during the day and not visible in the sky during the night.
The sun is low in the sky when it is far from Earth and high in the sky when it is close to Earth.
The sun's rotation causes its position to change from east to west throughout the day.
Earth's rotation causes the apparent movement of the sun from east to west.
Select TWO likely reasons why the European starling has a greater population size than the Atlantic puffin.
The European starling has a broader habitat range and higher reproductive rate.
The Atlantic puffin migrates less and has fewer predators.
The European starling is a nocturnal species and the Atlantic puffin is not.
The Atlantic puffin has a larger body size and requires more food.
A teacher used an electric kettle filled with water to demonstrate the water cycle to students. What process is being demonstrated when water turns into steam in this setup?
Evaporation
Condensation
Precipitation
Freezing
A student groups the following materials together:
- copper wire
- brick
- wood
- rubber
Which property did the student MOST LIKELY use to group the materials?
Ability to float in water
Physical state
flexibility
electrical conductivity
Which statement describes a behavior of light shown in the diagram?
A. Arrow W and Arrow X show light refracting as it interacts with the surface.
B. Arrow W and Arrow Y show light refracting as it interacts with the surface.
C. Arrow Y and Arrow Z show light reflecting as it interacts with the surface.
D. Arrow W and Arrow Z show light reflecting as it interacts with the surface.
Look at what is happening as the light moves as rays W, Y and Z. What could the surface be made of?
The surface is a shiny piece of metal.
The surface is a dull piece of metal.
The surface is a clear piece of glass.
The surface is a hard piece of wood.
Which circuit is NOT a complete circuit?
A student adds 100 milliliters of water to a beaker and records the mass. The student then adds 12 grams of salt to the water and uses a hot plate to heat the mixture. The student stirs the warm water until the salt can no longer be seen in the water. The student claims that even though the salt has disappeared, some of the properties of the salt have not changed. What can the student do to support this claim?
Pour the water through a paper filter to separate out the salt
Add food coloring to the beaker so that the salt can be seen
Use a magnet to separate the salt from the water
Measure the mass of the water and the salt
Which piece of evidence provides the LEAST support for the claim that hammerhead sharks are adapted to live in open water and stingrays are adapted to live on the ocean floor?
A. A hammerhead shark has sharp teeth to bite and tear into its prey, while a stingray has flat teeth that can be used to crush prey.
B. A hammerhead shark's eyes are positioned in a way that allows it to see in many directions, while a stingray's eyes are positioned so that it can look upward.
The slender body shape of a hammerhead shark allows it to swiftly swim through the water, while the flat body shape of a stingray allows it to glide along the ocean bottom and settle into the sand.
A hammerhead shark has a body part that is less dense than water and prevents the shark from sinking, while the stingray does not have this body part that helps it float, so it will sink when it stops swimming.
A student mixed lemon juice and sugar with warm water. Which property of both the lemon juice and the sugar stayed the same when they were mixed with the water?
Density
Color
Shape
Mass
To ensure the electric motor still functions when Switch K is open, where should the motor be connected in the circuit?
1
2
3
4
Which life-cycle stage is MOST similar in the two organisms, and why?
A. Stage 1, because a new living organism has formed
B. Stage 3, because growth has not started yet
C. Stage 4, because growth is complete
Scientists examine the diagram shown, which has information about the fossils found in different layers of rock. The scientists believe that a sudden change in the environment at one point led to the disappearance of all the animals in the area. Which statements are supported by the information in the diagram? Select TWO correct answers.
Large trees most likely grew in Layers 4 and 5.
At one time the entire area was covered by an ocean.
The formation of Layer 4 occurred before the formation of Layer 5.
Layer 1 supported only large populations of aquatic plants.
The disappearance of the animals occurred before the formation of Layer 1.
A group of students took this picture of Box Canyon while hiking in Big Bend National Park. When looking at the picture, the students notice that Box Canyon has a "V" shape. Which process MOST LIKELY formed Box Canyon?
A. A glacier moving slowly over land
B. Long-term flooding of rivers and lakes
C. River water moving quickly over land
D. Continuous melting and freezing of glaciers
The Egyptian plover and the Nile crocodile can both be found along the Nile River. The Egyptian plover is a bird that cleans the Nile crocodile's teeth by picking out and eating meat that is stuck between the crocodile's teeth. The Nile crocodile does not eat the Egyptian plover.
Which statement describes a relationship between a living and a nonliving component of this scenario?
The Nile crocodile lives along the Nile River.
The Nile crocodile is a carnivore.
The Egyptian plover preys on the Nile crocodile.
The Egyptian plover lands on the Nile crocodile.
A student uses three sediments to make a cementation model. She layers the sediments in a container as shown. What should the student do NEXT to complete the model of cementation?
Mix food coloring with each sediment
Add a heat source above the container
Shake the container until materials mix
add enough glue to fill gaps in materials
Students design an investigation to test the strength of different magnets. They use three magnets and steel paper clips. Each magnet is placed at a different distance from the steel paper clips.
The table they will use to record their data is shown.
What should the students do to improve the investigation?
Use different steel objects for each magnet
Place the paper clips farther away from each magnet
Place each magnet at the same distance from the paper clips
Repeat the investigation using plastic paper clips.
An area of land containing living organisms may rapidly or slowly change to a surface covered with a new rock layer that does not contain any living organisms. Which statement BEST explains why this change occurs?
A landslide removes all soil from the area.
A hurricane with high winds causes erosion in the area.
An earthquake changes the land structures of the area.
A volcanic eruption causes lava to flow into the area.
The Texas paintbrush is a native Texas wildflower.
The roots of this plant can pull needed water and nutrients from the root systems of nearby plants.
Which statement describes another way that this interaction between the Texas paintbrush and other plants helps the Texas paintbrush survive in its environment?
The Texas paintbrush is protected from animals that feed on plants.
The Texas paintbrush slows the growth of nearby plants so that it has plenty of room to grow.
The Texas paintbrush grows during different times of the year than nearby plants do.
The Texas paintbrush increases in its attractiveness to bees and other pollinators that help it reproduce
A student is helping a teacher move a bookcase. The student pushes on the bookcase, but the bookcase does not move.
Which action should the student take in order to move the bookcase?
Apply more force to one side of the bookcase
Apply more downward force to the bookcase
Apply less force to the bookcase
Apply equal force to all sides of the bookcase
This model shows how sedimentary rock is formed.
What is occurring at Position 2 in the model?
Layers of sediment are being pressed together.
Sediment is being dropped into a new location.
Rocks are being carried to new locations.
Substances are filling in the spaces between particles.
