STAAR Grade 5: Science 2 — Questions and Answers
Question 1: Which tool is best used to measure the mass of an object in science class?
- Ruler
- Triple beam balance (Correct answer)
- Thermometer
- Graduated cylinder
Correct answer: Triple beam balance
A triple beam balance is used to accurately measure the mass of objects in grams.
Question 2: What is the force that pulls objects toward the center of Earth?
- Magnetism
- Friction
- Gravity (Correct answer)
- Buoyancy
Correct answer: Gravity
Gravity is the force that pulls all objects with mass toward each other, including pulling objects toward Earth's center.
Question 3: A food web shows which of the following?
- How energy moves through an ecosystem (Correct answer)
- The life cycle of one organism
- How rocks change over time
- The water cycle in a habitat
Correct answer: How energy moves through an ecosystem
A food web shows how energy flows from producers to consumers through feeding relationships in an ecosystem.
Question 4: Which planet is known as the Red Planet?
- Venus
- Jupiter
- Saturn
- Mars (Correct answer)
Correct answer: Mars
Mars is called the Red Planet because its surface contains iron oxide (rust), giving it a reddish appearance.
Question 5: What is the term for the change from a solid directly to a gas without passing through the liquid state?
- Evaporation
- Condensation
- Sublimation (Correct answer)
- Melting
Correct answer: Sublimation
Sublimation is the process by which a solid changes directly into a gas, as seen with dry ice.
Question 6: Which of the following is a producer in an ecosystem?
- Frog
- Grasshopper
- Grass (Correct answer)
- Eagle
Correct answer: Grass
Grass is a producer because it makes its own food through photosynthesis using sunlight.
STAAR Grade 5: Science 2
Which tool is best used to measure the mass of an object in science class?