Grade 8 · Science · On Level
Free Science Concepts and Evidence worksheet - version 2
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 · On-level practice · 8 questions · Version PG-SIOZLK-N8EZ
What is velocity?A. Total mass is conserved B. Speed with direction C. Repel D. The number of cycles per unit time
What do like electric charges do?A. Repel B. Formation of a new substance C. Speed with direction D. The number of cycles per unit time
What transfers thermal energy by direct contact?A. The number of cycles per unit time B. Conduction C. Speed with direction D. They rearrange into new substances
What is a wave's frequency?A. Speed with direction B. They rearrange into new substances C. Total mass is conserved D. The number of cycles per unit time
What is evidence of a chemical change?A. Total mass is conserved B. Formation of a new substance C. Speed with direction D. They rearrange into new substances
What does Newton's second law relate?A. Speed with direction B. Formation of a new substance C. Total mass is conserved D. Force, mass, and acceleration
How is mass affected in a closed-system reaction?A. Formation of a new substance B. Total mass is conserved C. Conduction D. They rearrange into new substances
What happens to atoms during a chemical reaction?A. They rearrange into new substances B. Conduction C. Total mass is conserved D. Force, mass, and acceleration
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 2
- What is velocity?Speed with direction
- What do like electric charges do?Repel
- What transfers thermal energy by direct contact?Conduction
- What is a wave's frequency?The number of cycles per unit time
- What is evidence of a chemical change?Formation of a new substance
- What does Newton's second law relate?Force, mass, and acceleration
- How is mass affected in a closed-system reaction?Total mass is conserved
- What happens to atoms during a chemical reaction?They rearrange into new substances
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.