Grade 8 · Science · On Level
Free Science Concepts and Evidence worksheet - version 19
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-M2BBVC-N8EZ
How is mass affected in a closed-system reaction?A. The number of cycles per unit time B. Formation of a new substance C. Total mass is conserved D. Force, mass, and acceleration
What is a wave's frequency?A. The number of cycles per unit time B. Repel C. Conduction D. They rearrange into new substances
What happens to atoms during a chemical reaction?A. Total mass is conserved B. Force, mass, and acceleration C. They rearrange into new substances D. Conduction
What is evidence of a chemical change?A. Conduction B. Force, mass, and acceleration C. They rearrange into new substances D. Formation of a new substance
What transfers thermal energy by direct contact?A. The number of cycles per unit time B. Speed with direction C. Repel D. Conduction
What does Newton's second law relate?A. Force, mass, and acceleration B. The number of cycles per unit time C. Formation of a new substance D. Total mass is conserved
What do like electric charges do?A. The number of cycles per unit time B. Repel C. Total mass is conserved D. Force, mass, and acceleration
What is velocity?A. Force, mass, and acceleration B. The number of cycles per unit time C. Speed with direction D. They rearrange into new substances
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 19
- How is mass affected in a closed-system reaction?Total mass is conserved
- What is a wave's frequency?The number of cycles per unit time
- What happens to atoms during a chemical reaction?They rearrange into new substances
- What is evidence of a chemical change?Formation of a new substance
- What transfers thermal energy by direct contact?Conduction
- What does Newton's second law relate?Force, mass, and acceleration
- What do like electric charges do?Repel
- What is velocity?Speed with direction
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.