Variables & Graphs

Does heating a cup of water allow it to dissolve more sugar? Temperature of the water is measured in degrees Centigrade. Amount of sugar is measured
in grams. What is the independent variable?

• heating of water
• amount of sugar dissolved
• temperature of water
• amount of sugar

Does heating a cup of water allow it to dissolve more sugar? Temperature of the water is measured in degrees Centigrade. Amount of sugar is measured
in grams. What is the dependent variable? 

• heating of water
• amount of sugar disssolved
• temperature of water
• amount of sugar

Does heating a cup of water allow it to dissolve more sugar? Temperature of the water is measured in degrees Centigrade. Amount of sugar is measured
in grams. What are the controlled variables?

• heating of water
• amount of sugar dissolved
• temperature of water

Does heating a cup of water allow it to dissolve more sugar? Temperature of the water is measured in degrees Centigrade. Amount of sugar is measured
in grams. What is the other controlled variable?

• heating of water
• amount of sugar dissolved
• amount of sugar

Linda wanted to know if heat has an effect on mold growth. She grew the mold in 9 jars with the same amount and type of food. Three jars were kept at 5^oC. Three were kept at 92^oC. Three were kept at 28^oC. The growth of the mold was recorded after five days. What is the controlled variable in this experiment?

• amount and type of food
• amount of heat exposed
• growth of the mold
• temperature

Linda wanted to know if heat has an effect on mold growth. She grew the mold in 9 jars with the same amount and type of food. Three jars were kept at 5^oC. Three were kept at 92^oC. Three were kept at 28^oC. The growth of the mold was recorded after five days. What is the independent variable in this experiment?

• amount and type of food
• amount of heat exposure
• growth of the mold
• temperature

Linda wanted to know if heat has an effect on mold growth. She grew the mold in 9 jars with the same amount and type of food. Three jars were kept at 5^oC. Three were kept at 92^oC. Three were kept at 28^oC. The growth of the mold was recorded after five days. What is the dependent variable in this experiment?

• amount and type of food
• amount of heat exposure
• growth of the mold
• temperature

What is something on a graph that you have control over and isn't changed by any other variable?

• Independent variable

• Dependent variable

• Controlled variable

• Extraneous variable

Time such as minutes, days, and months will always be a(n) ________________ variable when graphing.

• Controlled

• Independent

• Dependent

• Extraneous

What is the independent variable in this graph?

• Tadpoles

• Year

• Frogs

• Number of tadpoles in the pond