Some Natural Phenomena
Science · Grade 7 · Week 37 · 25 questions
Acids, bases, and salts are fundamental categories of chemicals that interact in important ways. Understanding their properties and reactions is essential for chemistry and has practical applications in everyday life.
What you'll practise
- Find the mean of data sets
- Identify acids, bases, and their properties
- Use indicators to test pH levels
- Understand neutralisation reactions
All 25 questions in this Some Natural Phenomena quiz
Grade 7 Science — Some Natural Phenomena: 25 practice questions with instant scoring and explanations.
- Lightning is a form of
- Lightning occurs when
- Electrostatic charge is produced by
- Thunder is caused by
- The delay between lightning and thunder is due to
- Earthing is used to
- A lightning conductor protects buildings by
- An earthquake is caused by
- The place where tectonic plates slide is called
- The epicenter of an earthquake is
- A seismograph is used to
- The Richter scale measures
- A magnitude of 2 on the Richter scale means
- Primary waves (P-waves) in earthquakes
- Secondary waves (S-waves) in earthquakes
- Earthquakes cannot be
- Static electricity accumulates when
- A lightning conductor is typically made of
- The focus of an earthquake is
- Earthquakes are most common at
- A magnitude 7 earthquake on Richter scale is considered
- Safe practices during lightning include
- The energy released by an earthquake comes from
- Aftershocks are
- When rubbing two objects, electrons transfer to create
Question 1 of 250 correct so far