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Worksheets2023 Science STAAR
Total questions: 23
Worksheet time: 14mins
Students poured water and cooking oil into a beaker. The students then added a penny, a plastic paper clip, and a cork to the beaker and recorded their observations. Observations: - The water was on the bottom, and the oil was on top of the water. - The penny dropped to the bottom of the beaker. - The plastic paper clip floated on the water but under the oil. - The cork floated on top of the oil. Which list puts the items in order from most dense to least dense?
Cork, oil, plastic paper clip, water, penny
Water, penny, oil, plastic paper clip, cork
Penny, water, plastic paper clip, oil, cork
Oil, penny, cork, plastic paper clip, water
Students use a circuit to investigate the properties of six objects. The buzzer makes a sound if an object completes the circuit. The circuit and observations are shown below. Which objects are electrical insulators?
Eraser, toothpick, cotton ball
Toothpick, paper clip, safety pin
Eraser, paper clip, safety pin
Paper clip, safety pin, aluminum foil
The pictures show tools that can be used for separating mixtures. Which mixture is paired with the best tool for separating the materials?
Mixture: Salt and pepper, Tool: Tweezers
Mixture: Pieces of cork and pebbles, Tool: Beaker of water
Mixture: Safety pins and iron nails, Tool: Magnet
Mixture: Sand and iron filings, Tool: Colander
A student heats 250 milliliters of water in a cup to approximately 50 °C and adds 6 grams of salt. The mixture of salt and water is then stirred for 15 seconds. Which results will the student MOST LIKELY observe after the mixture has been stirred for 15 seconds? Select TWO correct answers.
The salt will dissolve.
The salt will sink to the bottom of the cup.
The water will remain clear.
The salt will float on the water.
The water will change from clear to opaque white.
Which statement BEST describes what happens as water changes from one state to another?
As water is cooled, it freezes and changes from a solid to a liquid.
As water is cooled, it condenses and changes from a gas to a liquid.
As water is heated, it evaporates and changes from a liquid to a solid.
As water is heated, it melts and changes from a gas to a solid.
A class is using the setup shown to test this hypothesis: 'The shorter the stack of books becomes, the shorter the distance the toy truck will roll.' What is ONE more piece of equipment needed to test the hypothesis AND how can the hypothesis be tested? Look at the diagram carefully. Then enter your answer and explanation in the box provided.
A student pushes a ball along a hallway. The diagram shows the position of the ball every second for five seconds after it starts rolling. At one of the positions shown, an extra force is applied to the ball as it moves. Which diagram BEST represents the direction of the extra force and the position where the extra force was applied to the ball?
Position 2
Position 4
Position 3
Position 5
Cutting the wire at which numbered position would allow two of the lightbulbs to remain lit?
Position 1
Position 2
Position 3
Position 4
A group of students builds the electric circuit shown. Which switches must be closed for Bulb 1 to remain dark but Bulb 2 to produce light?
Switch 1 only must be closed.
Switches 1 and 3 must be closed.
Switches 2 and 3 must be closed.
Switches 1, 2, and 3 must be closed
Which statement best explains why the observed fish appears to be closer to the surface than the actual fish?
When light travels from water into air, the light changes direction.
The light bounces off of the water and creates a reflected image of the fish.
When white light passes through the surface of the water, the light separates into colors.
The light enters the water and exits the water at the same angle.
The diagram shows a light ray that is traveling toward a mirror that is tilted upward. Which drawing best shows how the light ray travels after it reaches the surface of the mirror?
A
B
C
D
A student makes a sundial. The student takes a picture of the sundial at 3:30 p.m. Based on the student’s sundial, which letter is closest to the position of the sun when the picture was taken?
W
X
Y
Z
A diagram of some lunar phases is shown. Based on the diagram, which lunar phase will occur directly after X?
A
B
C
D
A student builds two models. Which processes of land formation were the student’s models designed to show?
Erosion by fast-moving water and erosion by wind
Valley formation by moving water and valley formation by a glacier
The formation of deltas by slowing water and the formation of oxbow lakes by erosion
Weathering caused by chemical reactions and weathering caused by temperature changes
The diagram shows how one type of fossil fuel is formed. How should the arrows in the diagram be labeled?
Pressure and heat
Erosion and deposition
Heat and cementation
Weathering and compaction
Based on the locations of the oil fields, which statement MOST LIKELY describes the environmental conditions in Texas millions of years ago?
Texas was once covered by a dry desert.
Texas was once covered by a shallow sea.
Texas was once covered by a flat grassland.
Texas was once covered by a tropical rain forest
Students make a table of renewable and nonrenewable resources. Which table correctly identifies resources as renewable or nonrenewable?
Renewable: Water, Coal; Nonrenewable: Wood, Solar
Renewable: Coal, Solar; Nonrenewable: Natural Gas, Minerals
Renewable: Wind, Minerals; Nonrenewable: Water, Oil
Renewable: Wood, Wind; Nonrenewable: Water, Oil
Which sentence describes the interaction of a white-tailed deer with both living and nonliving parts of its ecosystem?
The white-tailed deer hides behind a rock and uses the heat from the sun to stay warm.
The white-tailed deer protects its fawn from predators and shows the fawn how to find food.
The white-tailed deer rubs its antlers on a tree and eats leaves from the tree.
The white-tailed deer eats grass in a field and drinks water from a pond.
A teacher uses an aquarium to make a habitat for a frog. A list of student observations of the frog is shown. Student Observations: 1. Hiding in the leaves of a plant 2. Eating a mealworm 3. Swimming through the water 4. Burrowing in the soil 5. Catching a small cricket 6. Hopping over a rock Which student observations show the frog interacting with nonliving elements in its environment?
1 and 4
3 and 6
2 and 5
6 and 1
Researchers found seashell fossils, including those from mollusks and coral, in a rock formation high in the Rocky Mountains. Which statement BEST explains why seashell fossils can be found on some mountains?
The rocks formed under water.
Rivers carried the rocks up the mountains.
The area was a sand dune that hardened as it was covered by water.
The mountains split to form canyons that contained organisms with shells.
The table shows characteristics of two different types of birds that live in similar forest environments. Great Hornbill: - Long, curved beak - No bone in tongue - Long toes for grasping - Mostly black-colored body - Omnivore (insects, small animals, soft fruits) Macaw: - Short, curved beak - Tongue has bone - Long toes for grasping - Bright, colorful body - Herbivore (fruits, nuts, berries, seeds) Which statement explains an advantage of a bone in the macaw’s tongue that the hornbill does NOT need?
It helps macaws catch and chew small mammals and crustaceans.
It helps macaws break open and eat tropical fruits and nuts.
It helps macaws make large holes in trees to reach insects to eat.
It helps macaws swallow whole prey.
The tallest trees in a rain forest are removed for lumber. This increases the amount of light on the forest floor. The table shows information about fungi and ferns that grow on the forest floor. Wood-Decay Fungi: - Get energy from decaying wood - Make structures called spores to reproduce - Have spores that grow best in dark conditions - Use root-like structures to gather water Fiddle Leaf Ferns: - Get energy from sunlight - Make structures called spores to reproduce - Have spores that need sunlight to grow - Have roots, stems, and leaves Which statement explains why one organism is better adapted to the removal of the tall trees?
The fungi are better adapted because they have spores that grow better in the dark.
The ferns are better adapted because they have strong root systems.
The fungi are better adapted because they can get energy from decaying trees.
The ferns are better adapted because they get energy from the sun
The life stages of two animals are shown. Which statement BEST describes a stage in the animals' development?
Animal 1 changes form to become an adult.
Both animals look like the adult while growing.
Animal 2 reaches adulthood in a shorter period of time.
Both animals have young that live in similar habitats.
