Name



Name: __________________ Period:______ Due: _____________

POW #3 _______out of 16

Part I: Multiple Choice – Show all work! No calculator! [1 point each]

|1) What is the value of |2) What is the number 0.00000482 written in scientific notation? |

|[pic] | |

|a) [pic] | |

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|b) [pic] |a) 4.82 x 106 |

| |b) 4.82 x 105 |

|c) 7 |c) 4.82 x 10-5 |

| |d) 4.82 x 10-6 |

|d) 73 | |

|3) What is the value of 5-4 ÷ 5-1? |4) Light travels at a speed of approximately 300,000,000 meters per second. How|

| |is this number expressed in scientific notation? |

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|a) 20 | |

| |a) 3 × 108 |

|b) 625 | |

| |b) 3 × 109 |

| | |

| |c) 300 × 106 |

|c) [pic] | |

| |d) 300 × 109 |

|d) [pic] | |

Part II: Multiple Choice – Show all work! Calculator allowed! [1 point each]

|5) Find the value of the expressions below. |6) The population of a city is 6.9 x 106 people. Over the next ten years, the |

| |population increases by 1.2 x 105 people. What is the new population of the |

|[pic] |city? |

|a) 256 | |

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|b) 16 | |

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|c) [pic] | |

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|d) [pic] | |

| |a) 7.02 x 106 |

| |b) 7.02 x 1011 |

| | |

| |c) 8.1 x 106 |

| |d) 8.1 x 1011 |

Part III: Extended Response – You may use calculator. Show all work!!!!!!

|7) Atoms are made of three elementary particles: protons, electrons, and neutrons. The mass of a proton is about 1.67 x 10-27 kg. The mass of an electron is about|

|0.000000000000000000000000000000911 kg. The mass of a neutron is about |

|1.68 x 10-27. Which particle has the least mass? Which particle has the greatest mass? |

|(2 points) |

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|Least __________________________ |

|Greatest_________________________ |

|8) The average distance between Earth and the sun is 93,000,000 miles. The average distance between Jupitar and the sun is 465,000,000 miles. Using scientific |

|notation, answer the questions below: (5 points) |

|Write the distance between Earth and the sun in scientific notation. |

|Write the distance between Jupiter and the sun in scientific notation. |

|How many times further from the Sun is Jupitar than Earth? |

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|a) _____________________ b) ________________ c) ________________________ |

|9) Simplify: 18 – [pic] (3 points) |

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|Answer _______________ |

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