STAAR Success - Grade 5 Science - Practice #2
Read each question carefully. Choose the best answer to each question. For open-response questions, determine the best answer to the question.
Question 1a
A student dissolves salt into water. Which of the following describes how the salt changes?
The salt molecules are destroyed.
The salt becomes a new compound.
The salt breaks into smaller particles that mix with the water.
The salt turns into water molecules.
Question 1b
Explain how the boiling of water is different from the rusting of iron in terms of changes to the matter.
Question 1c
Which of the following is a primary function of the respiratory system?
Delivering nutrients to cells
Exchanging oxygen and carbon dioxide
Producing energy in cells
Breaking down food
Question 1d
Scientists find fossils of a land mammal that lived millions of years ago. They discover that modern whales have bones in their bodies similar to the hind legs of this land mammal. What does this MOST LIKELY suggest?
Whales evolved from land mammals.
Whales have always lived in the ocean.
The land mammal evolved from whales.
Whales share no evolutionary link with the land mammal.
Question 1e
Which of the following actions BEST represents sustainable resource use?
Cutting down forests without replanting trees
Overfishing certain species of fish
Using wind turbines to generate electricity
Burning coal for energy
Question 1f
Engineers are designing a bridge to cross a river. Which material property is MOST important to consider in the design?
Color
Flexibility
Strength
Cost
Question 1g
Describe the steps engineers might take to test and improve a new design for an earthquake-resistant building. Include how they would analyze their results.
Question 2a
The table shows the velocity of a car over time. Describe the motion of the car during the first 4 seconds, from 4 to 6 seconds, and from 6 to 8 seconds. Use evidence from the graph to support your response.
Question 3a
A food web diagram shows the following relationships:
Grass → Grasshopper → Frog → Snake → Hawk
Grass → Rabbit → Hawk
Grass → Mouse → Snake → Hawk
If the population of snakes decreases, predict what will happen to the populations of frogs and mice. Explain your reasoning using the food web.
Question 4a
A volcano erupts and releases large amounts of ash into the atmosphere. What is the immediate impact of this eruption on local air quality?
Air quality improves.
Air quality worsens.
Air quality remains the same.
Air quality depends on precipitation.
Question 4b
A student observes that the moon appears to change shape over time. What causes these phases of the moon?
The Earth's shadow falls on the moon.
The moon moves closer to or farther from the Earth.
The moon orbits the Earth, changing the sunlight we see.
The sun's light is blocked by other planets.
Group 5
A diagram shows a river flowing over a plain, as well as a cross-section view of the river.
Question 5a
Explain how erosion and deposition affect the shape of the river over time.
Question 6a
What type of energy does a stretched rubber band have?
Kinetic energy
Potential energy
Thermal energy
Sound energy
Question 6b
A student dissolves salt into water. Which of the following describes how the salt changes?
The salt molecules are destroyed.
The salt becomes a new compound.
The salt breaks into smaller particles that mix with the water.
The salt turns into water molecules.
Teach with AI superpowers
Why teachers love Class Companion
Import assignments to get started in no time.
Create your own rubric to customize the AI feedback to your liking.
Overrule the AI feedback if a student disputes.