Scientific Method

Students in a science class placed ice in a cup. They were studying variables that affected how long it takes ice to melt. Select the variable that would most likely NOT affect the time it takes the ice to melt.

• size of cup

• number of students

• size of ice cube

• temperature in the room

Sam's set up his experiment by placing different beakers with different amounts of fertilizer and large concentrations of algae. Sam wanted to see if fertilizer made algae grow. Beaker A had 8 ml of fertilizer with 5 ml of water, Beaker B had 6 ml of fertilizer with 5 ml of water, Beaker C had 4 ml of fertilizer with 5 ml of water, Beaker D had 2 ml of fertilizer with 5 ml of water and Beaker E with no fertilizer. What is the independent variable in the experiment?

• amount of water

• amount of alge cells

• amount of fertilizer

• hours of day light

Sam's set up his experiment by placing different beakers with different amounts of fertilizer and large concentrations of algae. Sam wanted to see if fertilizer made algae grow. Beaker A had 8 ml of fertilizer with 5 ml of water, Beaker B had 6 ml of fertilizer with 5 ml of water, Beaker C had 4 ml of fertilizer with 5 ml of water, Beaker D had 2 ml of fertilizer with 5 ml of water and Beaker E with no fertilizer. What is the dependent variable in the experiment?

• amount of water

• amount of alge cells

• amount of fertilizer

• hours of day light

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Sam's set up his experiment by placing different beakers with different amounts of fertilizer and large concentrations of algae. Sam wanted to see if fertilizer made algae grow. Beaker A had 8 ml of fertilizer with 5 ml of water, Beaker B had 6 ml of fertilizer with 5 ml of water, Beaker C had 4 ml of fertilizer with 5 ml of water, Beaker D had 2 ml of fertilizer with 5 ml of water and Beaker E with no fertilizer. Which of the following is the control group for this experiment?

• Beaker A

• Beaker B

• Beaker C

• Beaker D

• Beaker E

What is an observation?

• A scientific statement based on ideas

• Using your senses to notice what is going on around you

• To be unaware of your surroundings

• The question that you want an answer to.

Tags

CCSS.RI.2.1

CCSS.RI.3.1

CCSS.RL.1.1

CCSS.RL.2.1

CCSS.RL.3.1

Should experiments be repeated over and over to see if the results are the same each time?

• yes
• no

Which of the following is a quantitative observation?

• The bird is very colorful.
• The bird has 4 different colors on him.
• The bird has many, many feathers.
• It is a bird. 

What is a qualitative observation about this image? 

• There are 10 mini trees in the picture. 
• There are two colored bushes in the picture. 
• There is one power line going across in the air. 
• There is art created from trees in this photo. 

If plants are exposed to sunlight, then they will grow taller.
What part of the scientific method is this an example of?

• Procedure
• Hypothesis
• Question
• Results

Tags

NGSS.MS-LS1-5

A scientist hypothesizes the the temperature at which an alligator's egg is incubated will determine whether the alligator will be male or female. The dependent variable is

• the size of the baby alligators
• the gender of the baby alligators
• the incubator
• the temperature

Tags

NGSS.MS-LS1-5