Grade 8 · Science · Building Confidence
Free Science Concepts and Evidence worksheet - version 6
Grade 8 science practice based on published U.S. learning expectations, with reproducible original variations. This printable version includes 8 grade-appropriate questions and a separate answer sheet.
Science Concepts and Evidence
Grade 8 · Building confidence · 8 questions · Version PG-PMML10-1751
What is a wave's frequency?A. Total mass is conserved B. The number of cycles per unit time C. Conduction D. They rearrange into new substances
What does Newton's second law relate?A. Speed with direction B. Force, mass, and acceleration C. Conduction D. They rearrange into new substances
What is velocity?A. They rearrange into new substances B. The number of cycles per unit time C. Speed with direction D. Formation of a new substance
What is evidence of a chemical change?A. Conduction B. Formation of a new substance C. They rearrange into new substances D. Speed with direction
What transfers thermal energy by direct contact?A. Repel B. Formation of a new substance C. Conduction D. Total mass is conserved
What happens to atoms during a chemical reaction?A. They rearrange into new substances B. Force, mass, and acceleration C. The number of cycles per unit time D. Total mass is conserved
What do like electric charges do?A. Repel B. Conduction C. Total mass is conserved D. Formation of a new substance
How is mass affected in a closed-system reaction?A. Total mass is conserved B. Force, mass, and acceleration C. They rearrange into new substances D. Conduction
Answers and teaching notes
Use the answers to check the work after the learner finishes. For writing prompts, the guide describes what a strong response should include.
Show answers for version 6
- What is a wave's frequency?The number of cycles per unit time
- What does Newton's second law relate?Force, mass, and acceleration
- What is velocity?Speed with direction
- What is evidence of a chemical change?Formation of a new substance
- What transfers thermal energy by direct contact?Conduction
- What happens to atoms during a chemical reaction?They rearrange into new substances
- What do like electric charges do?Repel
- How is mass affected in a closed-system reaction?Total mass is conserved
Worked example
Read the direction, identify the assessed skill, solve or cite evidence, and check the response.
Common mistake
Using a memorized procedure without checking what the question asks.
Helpful hint
Name the standard skill before answering.