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**Which of the following is a component of a computer's central processing unit (CPU)?**
Arithmetic Logic Unit (ALU)
**What is the primary purpose of a circuit breaker?**
To prevent overload and protect electrical circuits.
**Which term refers to the amount of matter in an object?**
Mass
**What is the function of a transformer in an electrical circuit?**
To change the voltage of alternating current (AC).
**Which of the following is an example of a renewable energy source?**
Solar energy
**What do you call a triangle with one angle measuring more than 90 degrees?**
Obtuse triangle
**What is the term for the force that attracts objects toward the center of the Earth?**
1
, Gravity
**In which type of energy transformation does a wind turbine convert wind energy?**
Mechanical energy to electrical energy
**What is the result when a positive and negative charge come together?**
They neutralize each other.
**Which of the following best describes kinetic energy?**
The energy of an object in motion.
**What is the chemical symbol for the element gold?**
Au
**What type of reaction occurs when an acid and a base combine?**
Neutralization reaction
**In which of the following situations would you use a compass?**
To determine direction when navigating.
**What type of graph is best for showing parts of a whole?**
Pie chart
2
, **Which of the following is an example of an insulator?**
Rubber
**What is the main function of the respiratory system?**
To facilitate gas exchange in the body.
**What type of wave is produced by an earthquake?**
Seismic wave
**Which of the following properties is a characteristic of metals?**
Good conductivity of heat and electricity
**What is the process by which plants convert sunlight into energy?**
Photosynthesis
**In geometry, what do you call a line that touches a circle at exactly one point?**
Tangent line
**Which of the following measurements is used to determine the amount of space an object
occupies?**
Volume
3