Grade 8 · Science · On Level
Free Science Concepts and Evidence worksheet - version 16
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-LSBQ6D-N8EZ
What is evidence of a chemical change?A. The number of cycles per unit time B. Repel C. Total mass is conserved D. Formation of a new substance
What is velocity?A. They rearrange into new substances B. Repel C. Total mass is conserved D. Speed with direction
What is a wave's frequency?A. Repel B. Formation of a new substance C. Conduction D. The number of cycles per unit time
What transfers thermal energy by direct contact?A. Conduction B. Speed with direction C. Repel D. Force, mass, and acceleration
What do like electric charges do?A. Conduction B. Force, mass, and acceleration C. The number of cycles per unit time D. Repel
How is mass affected in a closed-system reaction?A. Total mass is conserved B. Formation of a new substance C. Conduction D. Speed with direction
What does Newton's second law relate?A. Formation of a new substance B. Force, mass, and acceleration C. Total mass is conserved D. Repel
What happens to atoms during a chemical reaction?A. They rearrange into new substances B. Formation of a new substance C. Speed with direction D. The number of cycles per unit time
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 16
- What is evidence of a chemical change?Formation of a new substance
- What is velocity?Speed with direction
- What is a wave's frequency?The number of cycles per unit time
- What transfers thermal energy by direct contact?Conduction
- What do like electric charges do?Repel
- How is mass affected in a closed-system reaction?Total mass is conserved
- What does Newton's second law relate?Force, mass, and acceleration
- 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.