Early Elementary Report

penny lifters

 

question: What size bag lifts the most pennies?

 

hypothesis: Bags lift pennies because they have hot water in them and they float in cold water. Big bag will lift the most ,and little bag will lift the least.

 

materials: thermometer,bags,pennies,bathtub ,water, hot and cold.

 

experiment : i filled  the bathtub with cold water; i stuck the thermometer in;

Mommy filled a container with hot water; i stuck the thermometer in; i filled the bags with hot water; i put the bags in the bathtub; i saw if they could float;  i put a penny in the bag ; i saw if they could float (again). repeat last two steps until no bag can float.

i repeated this 5 times.

 

 

 

Variables: I changed the size of bag.

the number of pennies it could lift changed too.

the water temperature stayed the same.

 

results :

The gallon lifted the most because it was biggest.

 

 

pennies lifted:

 

 

 

 

 

bag:

trial # 1

trial # 2

trial # 3

trial # 4

trial # 5

 

mode

snack

0

0

0

0

0

 

0

sandwich

1

1

2

1

1

 

1

quart

1

1

1

1

1

 

1

gallon

2

2

1

3

2

 

2

my chart.

 

bibliography The amazing air balloon,balloon ride,experiments with heat,the magic school bus in the arctic:a book about heat,heat fundamentals: funtastic science activities for kids.