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Science Concepts and Evidence

Grade 11 · Building confidence · 8 questions · Version PG-LZG4LI-90RE

1.

What happens to wave speed when frequency rises in the same medium?A. Energy changes form but total energy is conserved B. Change in velocity per unit time C. Rate of charge flow D. It stays constant while wavelength decreases

2.

What energy does a moving object have?A. It stays constant while wavelength decreases B. Mass times velocity C. Rate of charge flow D. Kinetic energy

3.

What does conservation of energy mean?A. Rate of charge flow B. Change in velocity per unit time C. Energy changes form but total energy is conserved D. Kinetic energy

4.

What is power?A. Kinetic energy B. Inertia C. Mass times velocity D. Rate of energy transfer or work

5.

What is acceleration?A. Mass times velocity B. Inertia C. Change in velocity per unit time D. Kinetic energy

6.

What does Newton's first law describe?A. Kinetic energy B. Change in velocity per unit time C. Mass times velocity D. Inertia

7.

What does electric current measure?A. Rate of charge flow B. Kinetic energy C. Inertia D. Change in velocity per unit time

8.

What is momentum?A. Inertia B. Mass times velocity C. Change in velocity per unit time D. It stays constant while wavelength decreases

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 17
  1. What happens to wave speed when frequency rises in the same medium?It stays constant while wavelength decreases
  2. What energy does a moving object have?Kinetic energy
  3. What does conservation of energy mean?Energy changes form but total energy is conserved
  4. What is power?Rate of energy transfer or work
  5. What is acceleration?Change in velocity per unit time
  6. What does Newton's first law describe?Inertia
  7. What does electric current measure?Rate of charge flow
  8. What is momentum?Mass times velocity

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.