LAB+1+-+Measuring

=Lab 1 - Measuring - Errors when measuring=

Thinking about things that could lead to errors in measurement...

1. Type __**ONE**__ thing that you wrote down on your lab sheet that you felt could lead to an error in measurement. 2. Please CHOOSE an activity that has the fewest amount of posts and post your response there. If they all have the same number of posts, then choose any activity to post under. 3. Write your first name after your post and click Save when done.

Measuring the **circumference** of the globe: I stretched the string, so I added some length to the string- Jacob If the globe was moving when you were measuring it- Paige If you had the string crooked- Liz If the string wasn't on the equator exactly-Brandon S the string slipped down -Hannah M

Measuring the **mass** of a rock: If you forgot to record the bottom number on the scale. -Kaitlyn Not using the ones sliding weight. -Phil Not waiting until the scale stops moving. -Lukas Not having the scale level before you started-Matt B I wrote down the wrong measurement-Brandon K you can put to much moving Zach

Measuring the **width** of the classroom door: If you measured the whole door instead of the width - AJ using the inches side of the ruler - Sam D Measuring the height of the door instead of the width - Blake the ruler wasn't straight.-Ryan K The could of moved-BrittanyV

Measuring the **temperature** of the cold water from the drinking fountain: If a whole bunch of kids just drank out of it, it might not have been as cold. - Brittany D I didn't wait till the air conditioner kicked in-Taylor If you don't look hard you could be looking at a wrong spot. -Hannah P If I didn't hold the thermometer in the water long enough. -Joel If you took water from the classroom.-Ben

Measuring the **temperature** of the hot water from the classroom faucet: Did not let it run long enough - Mitchell If you let the thermometer touch the bottom, the temp. could be incorrect. -Karissa If you don't hold the thermometer at the center of the cylinder the temp would be a little off. --Johanna If you don't let the hot water run long enough the temperature would be off. -Bergan If you read the wrong scale/If you read F. instead of C.-Amanda

Measuring the **temperature** of the cold water from the bathroom faucet: If I didn't fill the graduated cylinder 50 mL.-Brynn If you didn't run the water long enough. - Josh I didn't let the thermometer stay in the water long enough. -Mariah If I had the thermometer touch the bottom of the cylinder, the temperature could of been off. -Nate If you measured in degrees Farenheit instead of Celcius-Matt M If you did not let the thermometer sit long enough you could not get the accurate temperature. ??? Who is this?

Measuring the **length** of a stick: you maybe didn't put the stick at the very end. - Shasta The stick had curves so it made it hard to measure to the very end. :p Dylan B. You could have measured it wrong by using inches instead of centimeters.-Molly S. You could have broken part of the stick.-Duncan We didn't line it up perfectly with the zero. -Levi

Measuring the **volume** of water: If I happened to spill the water out of the flask.-Silas someone could have spilled some of the water-Austin C we could have spilled-Bailey A The water could have creeped up the sides,-Nick