*Question*
Q: What are the parts used in electronic devices such as computers called?   Read this paragraph and choose the correct option from the provided answers:  Electronic components are the parts used in electronic devices such as computers. Types of electronic components include diodes, transistors, and integrated circuits.   Choices:  - batteries  - digital components  - chargers  - electronic components   A:
**Answer**
electronic components

*Question*
Q: Most plant cells have a large central what?   Read this paragraph and choose the correct option from the provided answers:  Most plant cells have a large central vacuole . It can make up as much as 90 percent of a plant cell’s total volume. The central vacuole is like a large storage container. It may store substances such as water, enzymes, and salts. It may have other roles as well. For example, the central vacuole helps stems and leaves hold their shape. It may also contain pigments that give flowers their colors.   Choices:  - nuclei  - loci  - membranes  - vacuole   A:
**Answer**
vacuole

*Question*
Q: How many types of surface waves are there?   Read this paragraph and choose the correct option from the provided answers:  Surface waves travel along the ground outward from an earthquake’s epicenter. Surface waves are the slowest of all seismic waves. They travel at 2.5 km (1.5 miles) per second. There are two types of surface waves. Love waves move side-to-side, much like a snake. Rayleigh waves produce a rolling motion as they move up and backward ( Figure above ). Surface waves cause objects to fall and rise. They also cause objects to sway back and forth. These motions cause damage to rigid structures during an earthquake.   Choices:  - over a hundred  - three  - six  - two   A:
**Answer**
two

*Question*
Q: The decay rate is measured in a unit called the what?   Read this paragraph and choose the correct option from the provided answers:  The decay of an unstable isotope to a stable element occurs at a constant rate. This rate is different for each isotope pair. The decay rate is measured in a unit called the half-life. The half-life is the time it takes for half of a given amount of an isotope to decay. For example, the half-life of carbon-14 is 5730 years. Imagine that you start out with 100 grams of carbon-14. In 5730 years, half of it decays. This leaves 50 grams of carbon-14. Over the next 5730 years, half of the remaining amount will decay. Now there are 25 grams of carbon-14. How many grams will there be in another 5730 years? Figure below graphs the rate of decay of carbon-14.   Choices:  - decay rate  - exponential decay  - radioactive decay  - half-life   A:
**Answer**

half-life