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Air Pressure 15 N

Air Pressure 15 N. In which direction will these balloons travel?. Wind gust 15 N. Lift 30 N. Gravit y 15 N. ANSWER: The balloons will move to the left. You notice that your plate is warm underneath your hot dinner. Which statement describes why your plate is hot?

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Air Pressure 15 N

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  1. Air Pressure 15 N In which direction will these balloons travel? Wind gust 15 N Lift 30 N Gravity 15 N

  2. ANSWER: The balloons will move to the left

  3. You notice that your plate is warm underneath your hot dinner. Which statement describes why your plate is hot? Radiation- because your hot food is sending heat waves to the plate B. Insulation- your plate is made to hold in heat C. Conduction- because your hot food is touching the plate

  4. ANSWER: C. Conduction- Because your hot food is touching your plate

  5. This compound is made up of different elements. Which elements are represented? CaCO3

  6. ANSWER: Calcium, Carbon, Oxygen

  7. List these substances in the correct position from most dense to least dense. They each have a volume of 5 ml

  8. ANSWER: Corn Syrup, Soda, Vinegar, Oil

  9. When you stop to put fuel in your car, what energy transformation is represented? Electrical to mechanical Chemical to nuclear Mechanical to chemical Chemical to mechanical

  10. ANSWER: D. Chemical to mechanical

  11. During a demonstration, your teacher pushes some books. Demonstration 1. Your teacher pushes 1 book with 2N of force Demonstration 2. Your teacher pushes 1 book with 4 N of force Demonstration 3. Your teacher pushes 2 books with 4 N of force Which 2 demonstrations will cause the books to move at the same speed?

  12. ANSWER: Demonstrations 1 and 3 will move at the same speed ( Each book has 2N of force pushing on it)

  13. What is occurring to the M&Ms? Heat is transferring to the M&Ms by convection Heat is transferring from the M&Ms by conduction Heat is transferring to the M&Ms by conduction Heat is transferring to the M&Ms by convection

  14. ANSWER: C. Heat is transferring to the M&Ms by conduction

  15. Which non metal is the most dense?

  16. ANSWER: Wood is the most dense

  17. The image below shows that when sodium ( Na) a metal, is combined with chlorine ( Cl) a poisonous non-metal, a white solid is formed. Which statement is true? The properties of substances that react chemically stay the same when a new substance is formed The properties of substances that react chemically are different from the properties of the original substances

  18. ANSWER: B. The properties of substances that react chemically are different from the properties of the original substances

  19. Zack and Billy decide to race to see who can run around the outside of the school the fastest. Each lap around the school is 200 meters. This is their data: Which statement is true? Billy was faster than Zack by 140 m/min Zack was faster than Billy by 140 m/min They ran the same speed

  20. ANSWER: B. Zack was faster than Billy by 140 m/min

  21. What happened between 5 and 10 seconds on this graph? Distance The object is accelerating The object is decelerating The object has stopped The speed is decreasing

  22. ANSWER: C. The object has stopped.

  23. What type of heat transfer is occurring in these pictures?

  24. ANSWER: Convection

  25. Penguins stand close together to keep warm, and share body heat. Which direction will the body heat travel? Penguin 1 : 74 degrees Penguin 2: 92 degrees Penguin 3: 79 degrees 2 3 1 From Penguin 1 to Penguin 2 From Penguin 3 to Penguin 2 From Penguin 2 to Penguin 3

  26. ANSWER: C. From Penguin 2 to Penguin 3

  27. When we use pulleys, it helps to decrease the amount of force that is used because it: Makes to person work harder Swings the object directly to us Requires more work due to installing the pulleys Increases to amount of distance from the person lifting and the object

  28. Answer: Increases to amount of distance from the person lifting and the object

  29. The elements that are highlighted in yellow all are: • Metalloids that are insulators • Metals that are insulators • Nonmetals that are shiny • Nonmetals that are insulators

  30. Answer: Nonmetals that are insulators

  31. There are two unknown substances that the students have to test in science class. How would the determine if the substance is an element? • If the substance floats or sinks in water • The total amount of atoms in the substance. • The total amount of different atoms in the substance. • If the substance can burn when in contact with fire

  32. Answer: The total amount of different atoms in the substance

  33. A boy comes in form playing in the snow on a snowy day. The boy warms himself by sitting by the fireplace, this is an example of: • Conduction • Radiation • Convection • Burning

  34. Answer: Radiation

  35. What would be a correct statement to infer about the elements in the table above? They can only be made in a lab with a scientist These elements are only found on the Earth The elements are rare on the Earth and in the atmosphere All of the elements are used to make metal

  36. Answer: The elements are rare on the Earth and in the atmosphere

  37. A student is researching minerals and must determine the identity of the substance. The mass of the substance is 21 grams and the volume is 3cmᶟ. What is the identity of the mineral? A. Amethyst B. Ruby C. Garnet D. Adamite

  38. Answer: Ruby

  39. A student has on a propeller hat and wants to show her mother how it works. The propeller has a rubberband on it. She spins it several times to twist the rubberband, which statement best describes the purpose of the rubberband.? A. It transfers sound energy B. It has potential energy C. It has kinetic energy D. It transfers kinetic energy

  40. Answer: It has potential energy

  41. Which one of these elements is an element according to the chart above? A. 1 and 3 B. 2 C. 3 and 1 D. 1, 3 and 4

  42. Answer: 2

  43. A limited number of elements on the periodic table are present in: A. Earth B. Earth, all living matter, oceans, and the atmosphere only C. The atmosphere and the Earth only D. Earth, all living things and the ocean only

  44. Answer: Earth, all living matter, oceans, and the atmosphere only

  45. The information found on the square above is an: • A. mixture • B. Element • C. Compound • D. Letters representing a compound

  46. Answer: B

  47. Which direction will the heat flow? • From the hand to the fire • From the burning candle to the finger • From the finger to the burning candle • From the fire to the burning candle

  48. Answer: From the burning candle to the finger

  49. A student has a green block of an unknown substance and wants to find out what is based on its density. The mass of the block is 32 grams and the volume is 4 cm3. What is the block made of?

  50. Answer Calcite 8.0 g/cm3

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