E-1 Quiz

Avery is preparing a presentation for her science class and is considering using graphs to display her data. Which of the statements below about “graphs” is false?

• Graphs can tell a story about the motion of an object.

• Graphs are a visual representation of data.

• Graphs must always be used when displaying data.

• None of the above

Answer explanation

The statement 'Graphs must always be used when displaying data' is false because while graphs are helpful, they are not mandatory for data presentation. Other methods, like tables or text, can also effectively display data.

Aria is conducting a science experiment and needs to present her findings. Identify the reason(s) why she might use a graph.

• To visualize data

• To represent data

• To show the motion of an object

• All of the above.

Answer explanation

Aria might use a graph to visualize and represent data effectively, making it easier to understand trends and patterns. Additionally, graphs can illustrate the motion of an object, thus all options are valid reasons for using a graph.

Tags

NGSS.MS-PS3-1

Avery is presenting a graph about the growth of a local business over the years. On the graph below, which of the necessary components of a graph are missing/incorrect (if any)? Choose all that apply.

• The graph is missing the “x” and “y” labels for the vertical and horizontal axes.

• The graph is missing a title.

• The graph is missing an axis label.

• The axes are labeled incorrectly.

• The graph is not missing any components.

Answer explanation

The graph is missing an axis label, which is essential for understanding the data. Additionally, the axes are labeled incorrectly, leading to potential confusion about what the graph represents.

Ethan is observing the motion of a car on a highway. Can graphs be a representation of the motion of the car?

• True

• False

Answer explanation

True. Graphs can effectively represent the motion of a car by illustrating its position, speed, and acceleration over time, making it easier to analyze its behavior on the highway.

Rohan is preparing a scientific report and needs to include graphs. Scientific convention states that all graphs must have a title and axes labels with units. Labels and units should be on the appropriate axes themselves, such as time almost always being on the x-axis. Is this statement about scientific convention true or false?

• True

• False

Answer explanation

The statement is true. Scientific convention requires graphs to have a title and axes labeled with appropriate units. Time is typically placed on the x-axis, aligning with standard practices in data representation.

Kai is preparing a scientific report and needs to include a graph. Scientific convention states that all graphs must have a title and axes labels with units. Labels and units should be on the appropriate axes themselves, such as time almost always being on the x-axis. Explain your answer to the above question.

• Scientific convention says these are the requirements regarding axes labels and units, as well as graph titles.

• Not all graphs need to have units accompanying axes labels.

• Time is usually on the y-axis when placed on a graph.

• Graphs also always require a key detailing the scale.

Answer explanation

The correct choice emphasizes that scientific convention mandates titles and axes labels with units for graphs, ensuring clarity and consistency in data presentation.

Scarlett is observing a car's journey on a velocity-time graph. How can she tell if the car is stopped?

• When the line of the graph is on the x-axis.

• When the line of the graph is above the x-axis.

• When the line of the graph is below the x-axis.

• None of the above.

Answer explanation

Scarlett can tell the car is stopped when the line of the graph is on the x-axis, indicating a velocity of zero. If the line is above or below the x-axis, the car is either moving forward or backward, respectively.

Tags

NGSS.MS-PS3-1

The graph below shows the speed of a whale as it swims under the sea ice. Identify when the whale is moving at a constant speed, speeding up, slowing down, and stopped.

• The whale is swimming at constant speed from 0-10s, speeding up from 10-20s, moving at constant speed from 20-30s, slowing down from 30-40s, and stopped at 40s.

• The whale is stopped from 0-10s, speeding up from 10-20s, moving at constant speed from 20-30s, and slowing down from 30-40s.

• The whale is stopped from 0-10s, speeding up from 10-20s, stopped from 20-30s, and slowing down from 30-40s.

Answer explanation

The correct choice identifies the whale's movements accurately: constant speed from 0-10s, speeding up from 10-20s, constant speed from 20-30s, slowing down from 30-40s, and stopped at 40s.

Tags

NGSS.MS-PS3-1

Abigail is driving her car to the west at a speed of 90 miles per hour. Meanwhile, Arjun is driving his car to the east at a speed of 90 miles per hour. Compare the speed and velocity of the two cars.

• The cars have the same velocity and speed.

• The cars have the same speed, but different velocities.

• We cannot say anything about the velocities of the two cars.

• There is not enough information to make a comparison.

Answer explanation

Abigail and Arjun both drive at 90 miles per hour, so they have the same speed. However, their velocities differ because velocity includes direction: Abigail is westbound and Arjun is eastbound.

As Benjamin rides his skateboard away from a motion sensor, the line on the “velocity vs. time” graph would be:

• Above the x-axis

• Below the x-axis

• Right along the x-axis

• Depends on the mass of the skateboard

Answer explanation

As Benjamin rides away from the motion sensor, he is moving in the positive direction, resulting in a positive velocity. Therefore, the line on the velocity vs. time graph would be above the x-axis.