Explore: Click Reset, and drag the recording station closer to the epicenter. Which waves are faster? Estimate the time difference (∆T), and then use your graph to find the distance to the epicenter. Make a graph: Plot your data on the graph to the right of the data table. Practice: On each of the seismograms below, label the first P wave and the first S wave. Gizmo earthquake recording station answer key. Measure the P and S wave time difference (∆T) on the seismogram at each distance, and record the values in the table on the left. What major cities are located near the San Andreas Fault?
To begin, look at the key on the bottom left side of the Gizmo. Observe: Click Play, and observe the P and S waves. Generating Your Document. Click Play () and observe the seismic waves leaving the epicenter of the earthquake. Draw conclusions: How does the time difference (∆T) between the first P wave and the first S wave relate to the distance to the epicenter? Look at the upper right corner of the seismogram. Earthquake-proof homes gizmo answer key. Describe: Click Play and wait for the vibrations to stop. 4579 documents uploaded. Now is my chance to help others.
How does this seismogram differ from the one you first investigated? Preview 1 out of 7 pages. Check your answer using the Gizmo. You even benefit from summaries made a couple of years ago. It helped me a lot to clear my final semester exams.
Observe: Click Play, and then click Pause after the green S wave hits the station. When seismic waves reach the seismograph, a graphical record, or seismogram, is produced. Gather data: Place the recording station at each of the following distances to the epicenter. Earthquakes 2 - Determination of Epicenter. Earthquakes 1 gizmo answer key quizlet. See example at right. Northwestern University. Select the gizmo: Earthquake Recording Station and complete the questions below. I find Docmerit to be authentic, easy to use and a community with quality notes and study tips. Check that the Distance from the station to the center of earthquake is 860 km. Subscriber Access Only.
The Earthquake — Recording Station Gizmo™ simulates the seismic waves released by an earthquake. At what time did the S wave hit? Does not need to be exact. ) What symbol represents the recording station? One of the most useful resource available is 24/7 access to study guides and notes. There are two types of body waves:P waves (primary waves) and S waves (secondary waves). Based on the pattern of waves on the seismogram, what did you experience during the earthquake? Remember to go to and login. Use for 5 minutes a day. Place the recording station 300 km from the epicenter. Activity B (continued from previous page). Place the left (green) probe on the first P wave, and the right (blue) probe on the first S wave. Question: How can you determine how far you are from the center of an earthquake? Earthquakes are usually caused by the sudden movement of rocks along a fault, or fracture, in Earth's crust.
What is shown on the seismogram at this time? Scientists study earthquakes with the aid of an instrument called a seismograph. The most famous fault in the U. S. is the San Andreas Fault in California. This assignment is worth 25 points. Activity A: Reading a seismogram. Measure: Wait until the seismogram is complete. What would this earthquake feel like? Question: How are P and S waves shown on a seismogram?
Unit Rates and Ratios: The Relationship - A slight better way to visualize and make sense of the topic. Using Ratios and Proportions. Ratios and proportions color by number answer key. Scale drawings make it easy to see large things, like buildings and roads, on paper. Understand relationships among the angles, side lengths, perimeters, areas, and volumes of similar objects. Ratios can be written with colons or as fractions. Part III Challenge Problems.
Students will practice working with ratios and proportions. Identify two ways to write ratios. Multistep Ratio and Percent Word Problems - Hope you brushed up on your cross multiplication. Ratios and Proportions | Grades 6, 7, 8, and 9 | Activities, Videos, and Answer Sheets | Scholastic MATH. If the problem continues and asks you to make the gift basket three times bigger while maintaining the proportion of apples to oranges, you can do this by multiplying both numbers in the ratio by the amount you are increasing, in this case three. The ratio of lemon juice to lemonade is a part-to-whole ratio.
Develop, analyze, and explain methods for solving problems involving proportions, such as scaling and finding equivalent ratios. The unknown value would just need to satisfy the equivalence of proportions. Ratios and Proportion Worksheets. Ratios and proportions worksheet answer key. Ratios are often given to explain unit rates and a wide variety of measures. Driving a car going 40 miles per hour? This means it would take 5 hours to travel that distance. Over the series of these topics, we go over each of them.
Everything you need to introduce students to ratio, rate, unit rate, and proportion concepts and ensure they understand and retain them! This tutorial shows you how to take a word problem and use indirect measurement to turn it into a proportion. If two ratios have the same value, then they are equivalent, even though they may look very different! 7-1 ratios and proportions answer key. If we have next ratio is 4:8, you will see the proportional answer would be equal to each other that is 2/4 = 0.
Proportions are equations that we use to explain that two ratios are equal or equivalent. These skills are used endless throughout life, so it is important for students to grasp this. A pancake recipe uses cup of all-purpose flour and cup of rice flour. This comparison is made by using the division operation. A ratio is a fraction. You could use the multiplication property of equality! For example, the ratio between 2/5 and 8/20 have a proportional relationship. Cooks use them when following recipes. Why does it have to be hard? Ratios and Proportions | How are Ratios Used in Real Life? - Video & Lesson Transcript | Study.com. TRY: WRITING A RATIO.
Geometry and Measurement: Analyzing two- and three-dimensional space and figures by using distance and angle. When you're working with ratios, it's sometimes easier to work with an equivalent ratio. What does writing an equivalent ratio of a given ratio mean? A ratio shows a connection between two or a pair of digits. A proportion can be written in two forms: For example, where both are read "6 is to 9 as 2 is to 3". The business can use proportions to figure out how much money they will earn if they sell more products.
Before tall sky scrapers are build, a scale model of the building is made, but how does the architect know what size the model should be? My ratios are proportional if they divide into the same number. Know that these things are equal allows us to scale things by making them bigger or smaller quickly and easily. Then check out this tutorial and you'll see how to find the scale of a model given the lengths of the model and the actual object. Recognizing Proportional Relationships - How to spot them and interpret what that means to you. Equivalent ratios have different numbers but represent the same relationship. How do we write ratios? I have a recipe for hummingbird food that calls for one part sugar to four parts water. Example A: 24:3 = 24/3 = 8 = 8:1. I can double it by doubling the ratio to 2:8. It is a comparison of the quantities of two things. In this tutorial, you'll see how to find equivalent ratios by first writing the given ratio as a fraction. Solve for x: Solution: Apply the rule that "in a proportion, the product of the means equals the product of the extremes. I can use one cup of sugar to four cups of water to make food for the hummingbirds.
A ratio is a comparison of two (or more) quantities. Here, we will use the example of the above to see how proportions work for our puppies. Then, find and use a conversion factor to convert a unit in the rate. Then, write an equation using the scale factor to find your missing measurement! Let's see how proportions work for our puppies. Whole-to-Part: - The ratio of females to the whole delegation can be written as 3:5 or 3/5 The ratio of males to the whole delegation can be written as 2:5 or 2/5. The distance between the two cities is 300 miles. Ratios are always proportional when they show their relationship same. Use that relationship to find your missing value. Nicholas drinks ounces of milk for every cookies he eats. Can you do 100 sit-ups in 2 minutes? This tutorial let's you see the steps to take in order to turn a word problem involving a blueprint into a proportion.
It compares the amount of one ingredient to the sum of all ingredients. Ratios become proportional when they express the similar relation. This product addresses sixth, seventh, and eighth grade common core standards, but can also be used for advanced fifth grade students. A proportion is an equality of two ratios.
Integer-to-integer ratios are preferred. Tape Diagrams / Bar Models - We introduce you a method you can use to visualize a ratio. Watch this tutorial and take a look at dimensional analysis! Proportions tell you two ratios are equal to each other or not. Want to join the conversation?