Use the following image to answer the next question. 1. Which of the following rows identifies the electrical charge on A and B shown above?

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1 Old Science 30 Physics Practice Test A on Fields and EMR Test Solutions on the Portal Site Use the following image to answer the next question 1. Which of the following rows identifies the electrical charge on A and B shown above? Charge on A Charge on B A. negative positive B. negative negative C. positive no charge D. positive positive 2. The main difference between gravitational field strength and electric field strength is that A. Gravitational fields are both repulsive and attractive, but electric fields are neither B. The constant for gravitational fields is very large compared with the constant for electric fields C. Gravitational field strength depends on the distance between objects, but electric field strength does not D. Gravitational field strength depends on mass, but electric field strength does not Use the following to answer the next question During magnetic resonance imaging (MRI), a narrow tube moves the patient through a tunnel-like structure. Inside the structure, radio waves pass through a magnetic field around the patient, creating a 3-D image of the internal structures. Shown below are brain scans using an MRI machine 3. The major advantage of using an MRI over an X-Ray would be A. Radio waves are the highest energy so you get the most detail possible. B. Radio waves are ionizing radiation so you get the most radiation possible. C. Radio waves are the lowest energy so you get the least radiation possible. D. Radio waves are only able to see thermal heat so they do less damage..

2 4. Which of the following graphs depicts the relationship between gravitational field strength and the distance between an orbiting telescope and Earth? 5. At the end of their life cycle a low-mass star and a high-mass star will become (respectively): Low Mass Star High Mass Star A. White Dwarf Neutron Star B. White Dwarf Black Hole C. Neutron Star White Dwarf D. Neutron Star Neutron Star 6. Which grouping lists the individual bands of the electromagnetic spectrum from highest energy to lowest energy? a. X-rays, gamma rays, radio waves, infrared b. Gamma rays, infrared, radio waves, X-rays c. Gamma rays, X-rays, infrared, radio waves d. Infrared, radio waves, gamma rays, X-rays 7. A certain type of EMR produced by violent explosions in space has a wavelength of 1.00x10 4 m. This type of electromagnetic radiation can be detected by equipment at the A. Chandra X-ray Observatory B. Algonquin Radio Observatory C. Space Infrared Telescope Facility D. Compton Gamma-Ray Observatory

3 Use the information below to answer the next question The imaginary star X645 spectra shown below shows the reference and the actual spectra for Star X645 over a period of time. Both spectra are examples of i_ line spectrum. The Star s spectra compared to the reference suggest it is moving ii the Earth because it is iii -shifted. 8. The statements above are completed by the information in row Row i ii iii A. Emission away from Blue B. Emission toward Red C. Absorption away from Red D. Absorption toward Blue A star s spectra is represented below: 9. Which element is not represented in the star s spectra? A. Hydrogen B. Helium C. Calcium D. Magnesium Use the following information to answer the next question Scientists can use thermograms to identify the relative temperatures of different objects from far distances. For example, shown below are three metal cylinders at three different temperatures (left image). The thermogram image is shown on the right. 10. Thermograms are an example of using which part of the electromagnetic spectrum? A. Radio waves B. Infrared C. Visible light D. UV Rays

4 Numeric Response Use the table below for the next matching question Field Direction of Field Lines Test Object 1 Magnetic 4 Repulsion only 7 Compass Needle 2 Gravitational 5 Attraction only 8 Mass 3 Electric 6 Attraction and Repulsion 9 Point Charge Numerical Response 1. Select one field from the table above and match it with the number of the direction of the field lines and the type of test object for that field. (There is more than one correct combination of numbers.) Field Direction of Field Test Object Use the following to answer the next question 2. Match each component shown in the diagram above to the terms below. Use each term only once. Refraction Diffraction Polarization Reflection

5 SCI 30 FIELDS AND EMR CHAPTER QUIZ MC And NR (12 marks) NAME 28 Written Response [16 marks] 1. For the electric field below, what are the correct charges for A and B. [1 mark] A B 2. The magnetic field lines below state if the poles are the same or opposite? (1 mark) 3. If an electric sphere has a charge of nc, what is the electric field strength for an object 50.0 m away? (2 marks)

6 4. An unknown planet has an average radius of 7.2 X 10 4 meters, with a mass of approximately 9.58 X kg. a) Draw a picture of the unknown planet with gravitational field lines (include the direction the arrows point on the field lines). [1 mark] b) Calculate the gravitational field strength. [2 marks] 5. If the radius of Earth doubled in size and the mass tripled, what would the new gravitational field strength be? [ 2 marks] The following infographic shows how much different sections of the electromagnetic spectrum are able to penetrate through Earth s atmosphere. 6. According to the image above, which two types of EMR are best blocked by the atmosphere _ and. [1 mark]

7 7. If the electric field strength of a sphere is calculated to be 3.50 X 10 6 N/C when measured from 16.0cm away, what is the electric charge on the sphere? [ 2 marks] 8. For the wave below, calculate the wavelength and frequency. [2 marks] 9. Mr. McKennitt is wearing a t-shirt that says Frequency = Hz (Oh what a nerd!) as the t- shirt s colour reflects that exact frequency! Calculate the wavelength and identify the colour of Mr. McKennitt s t-shirt. [2 marks]

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