Variables in Science

Sarah conducts an experiment to determine whether the shape of ice affects how long it takes to melt. What is the independent variable?

• Sarah

• the shape of ice

• how long it takes to melt

• the experiment

Sarah conducts an experiment to determine whether the shape of ice affects how long it takes to melt. What is the dependent variable?

• Sarah

• the shape of ice

• the time it takes to melt

• the experiment

Jeremiah wanted to determine the best material to use to make Lima beans sprout. He put cotton balls in a bag, soil into another bag, and gravel into a final bag. He added 30ml of water to each of the three bags and one Lima bean to each bag. He placed all three bags in the windowsill of his kitchen so they could get sunlight. He then measured and recorded plant growth in all three bags.

What is the independent variable

• the Lima bean

• the material in which you grow the seed

• the amount of growth of the plant

• the bags you put the materials in

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Dr. Shrode knew that students who attended her morning study sessions performed better on science test but very few students attended them. She wanted to test if bringing doughnuts to the study sessions would increase student attendance. She continued to advertised the sessions in the same method and hold sessions at the same time. The only difference was that she brought doughnuts to the session. She had a 50% increase in attendance when she brought the doughnuts.

What is the independent variable?

• The study session

• The number of students who attend the study session

• The doughnuts

• The test

Dr. Shrode knew that students who attended her morning study sessions performed better on science test but very few students attended them. She wanted to test if bringing doughnuts to the study sessions would increase student attendance. She continued to advertised the sessions in the same method and hold sessions at the same time. The only difference was that she brought doughnuts to the session. She had a 50% increase in attendance when she brought the doughnuts.

What is the dependent variable?

• The number of students who attend the study session

• The doughnuts

• The test

• The study session

Dr. Shrode knew that students who attended her morning study sessions performed better on science test but very few students attended them. She wanted to test if bringing doughnuts to the study sessions would increase student attendance. She continued to advertised the sessions in the same method and hold sessions at the same time. The only difference was that she brought doughnuts to the session. She had a 50% increase in attendance when she brought the doughnuts.

Check the boxes next to all the constants in this experiment?

• The time of the study session

• The doughnuts

• The students

• The method of advertising the study session

• The number of students who attended the study session

Jeremiah wanted to determine the best material to use to make Lima beans sprout. He put cotton balls in a bag, soil into another bag, and gravel into a final bag. He added 30ml of water to each of the three bags and one Lima bean to each bag. He placed all three bags in the windowsill of his kitchen so they could get sunlight. He then measured and recorded plant growth in all three bags.

What is the dependent variable

• The Lima beans

• The material used to grow the Lima beans

• The amount of growth of the Lima beans

• The bags

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Jeremiah wanted to determine the best material to use to make Lima beans sprout. He put cotton balls in a bag, soil into another bag, and gravel into a final bag. He added 30ml of water to each of the three bags and one Lima bean to each bag. He placed all three bags in the windowsill of his kitchen so they could get sunlight. He then measured and recorded plant growth in all three bags.

Mark checks next to all the items that are constants in this experiment.

• The amount of sunlight

• The amount of water added to each bag

• The number of Lima beans placed in the bag

• The type of material used to grow the beans

• The type of beans used in the experiment

Tags

NGSS.MS-ETS1-1

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Erin conducts an experiment to determine if a milk chocolate bar will melt faster than a white chocolate bar when placed in the sun. What is the independent variable?

• The type of chocolate

• The sun

• The time it takes to melt the chocolate bar

• Erin

Erin conducts an experiment to determine if a milk chocolate bar will melt faster than a white chocolate bar when placed in the sun. What is the dependent variable?

• The type of chocolate

• The amount of sunlight

• The time it takes to melt the chocolate

• Erin

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4