*Question*
Q: What is a measure of both speed and direction of motion? Read this paragraph and choose the correct option from the provided answers: Velocity is a measure of both speed and direction of motion. Velocity is a vector, which is a measurement that includes both size and direction. Choices: - distance - intensity - acceleration - velocity A:
**Answer**
velocity

*Question*
Q: Regardless of the mode, light is modeled as traveling in straight lines called what? Read this paragraph and choose the correct option from the provided answers: 25.1 The Ray Aspect of Light There are three ways in which light can travel from a source to another location. (See Figure 25.3. ) It can come directly from the source through empty space, such as from the Sun to Earth. Or light can travel through various media, such as air and glass, to the person. Light can also arrive after being reflected, such as by a mirror. In all of these cases, light is modeled as traveling in straight lines called rays. Light may change direction when it encounters objects (such as a mirror) or in passing from one material to another (such as in passing from air to glass), but it then continues in a straight line or as a ray. The word ray comes from mathematics and here means a straight line that originates at some point. It is acceptable to visualize light rays as laser rays (or even science fiction depictions of ray guns). Ray The word "ray" comes from mathematics and here means a straight line that originates at some point. Choices: - waves - arrows - electrons - rays A:
**Answer**
rays

*Question*
Q: What is a three-dimensional anticline called? Read this paragraph and choose the correct option from the provided answers: In an anticline, rocks arch upward. A three-dimensional anticline is a dome. Choices: - cave - volcano - cyclone - dome A:
**Answer**
dome

*Question*
Q: What component of a prokaryote is unique in molecular composition and mechanism of propulsion? Read this paragraph and choose the correct option from the provided answers: Choices: - the sporangia - the membrane - the amoeba - the flagella A:
**Answer**
the flagella