# data[].attributes.body
Have the same person drop it every time.

# data[].attributes.body
How long the ruler is

# data[].attributes.headline
Control variable = How long you leave it before measuring how big the ‘crater’ is.

# data[].attributes.subject
Control variable = How long you leave it before measuring how big the ‘crater’ is.

# data[].attributes.body
Size of marble

# data[].attributes.body
4.Smooth sand and repeat previous steps

# data[].attributes.headline
Make sure there is the same amount of sand in he sand pit for every experiment

# data[].attributes.subject
Make sure there is the same amount of sand in he sand pit for every experiment

# data[].attributes.body
Same person dropping the marble, same force of the drop

# data[].attributes.body
The size and weight of the marble

# data[].attributes.body
3. Drop marble and get a smaller ruler to measure the diameter of the marble’s crater

# data[].attributes.headline
measure the height of marble from the bottom of the marble

# data[].attributes.subject
measure the height of marble from the bottom of the marble

# data[].attributes.headline
Measure from the top of the marble each time

# data[].attributes.subject
Measure from the top of the marble each time

# data[].attributes.body
Smooth the sand

# data[].attributes.body
Tray of Sand

# data[].attributes.body
Independent variable is the marble

# data[].attributes.body
The height of the surface of the sand from the bottom of the box

# data[].attributes.body
2. Hold metre stick gently but where it touches the sand hold marble to the height you wish to drop it from

# data[].attributes.headline
hold ruler so it is level with the top of the sand

# data[].attributes.subject
hold ruler so it is level with the top of the sand

# data[].attributes.body
Amount of sand in box

# data[].attributes.body
Type of sand

# data[].attributes.body
The height of which the marble is dropped

# data[].attributes.body
Weight of Marble

# data[].attributes.headline
Controlled variable could be the force that you throw the marble with

# data[].attributes.subject
Controlled variable could be the force that you throw the marble with

# data[].attributes.body
The same type of marble

# data[].attributes.body
The diameter of the ‘crater’

# data[].attributes.headline
Independent variable is the height from which you drop the marble

# data[].attributes.subject
Independent variable is the height from which you drop the marble