Biology quiz part 2

Identify whether this is a inference or observation:

The dog is not happy having their photo taken.

inference

Identify whether this is a inference or observation:

It rained right before this photo was taken?

inference

Identify whether this is a inference or observation:

The dog has white eyebrows.

observation

Identify whether this is a inference or observation:

You can see the John Hancock building from the location where the photo was taken

observation

Smithers thinks that a special juice will increase the productivity of workers. He creates two groups of 50 workers each and assigns each group the same task (in this case, they're supposed to staple a set of papers.) Group A is given the speical juice to drink while they work. Group B is not given the special juice. After an hour, Smithers counts how many stacks of papers each group has made. Group A made 1,587 stacks, Group B made 2,113 stacks.

What is the control group?

Group B

Smithers thinks that a special juice will increase the productivity of workers. He creates two groups of 50 workers each and assigns each group the same task (in this case, they're supposed to staple a set of papers.) Group A is given the speical juice to drink while they work. Group B is not given the special juice. After an hour, Smithers counts how many stacks of papers each group has made. Group A made 1,587 stacks, Group B made 2,113 stacks.

What is the experimental group?

Group A

Smithers thinks that a special juice will increase the productivity of workers. He creates two groups of 50 workers each and assigns each group the same task (in this case, they're supposed to staple a set of papers.) Group A is given the speical juice to drink while they work. Group B is not given the special juice. After an hour, Smithers counts how many stacks of papers each group has made. Group A made 1,587 stacks, Group B made 2,113 stacks.

What are the constants?

Time, amount of workers, task.

Smithers thinks that a special juice will increase the productivity of workers. He creates two groups of 50 workers each and assigns each group the same task (in this case, they're supposed to staple a set of papers.) Group A is given the speical juice to drink while they work. Group B is not given the special juice. After an hour, Smithers counts how many stacks of papers each group has made. Group A made 1,587 stacks, Group B made 2,113 stacks.

What is the independent variable

Number of pages stacked

Smithers thinks that a special juice will increase the productivity of workers. He creates two groups of 50 workers each and assigns each group the same task (in this case, they're supposed to staple a set of papers.) Group A is given the speical juice to drink while they work. Group B is not given the special juice. After an hour, Smithers counts how many stacks of papers each group has made. Group A made 1,587 stacks, Group B made 2,113 stacks.

What is the dependent variable

Productivity

What is the most dangerous piece of lab equipment

Humans

What is the scientific method?

The general steps include: defining a question, conducting background research, forming a testable hypothesis, performing experiments to collect data, analyzing that data, drawing a conclusion, and communicating the results.

Why should you put your hair up while doing lab work?(Besides it getting caught in something.)

You should put your hair up while doing lab work or an experiment because if you are working with flammable materials, you could burn your hair, and if your hair is longer it can obstruct your view of things and make it difficult to work.

Homer notices that his shower is covered in a strange green slime. His friend Barney tells him that coconut juice will get rid of the slime. Home decides to check this out by spraying half of the shower with water. After 3 days of "treatment," there is no change in the appearance of the green slime on either side of the shower.

What is Homers initial observation and what sense did he use to make his observation?

Homers shower is covered in green slime and he used his sense of vision to see that the shower was covered in slime.

Homer notices that his shower is covered in a strange green slime. His friend Barney tells him that coconut juice will get rid of the slime. Home decides to check this out by spraying half of the shower with water. After 3 days of "treatment," there is no change in the appearance of the green slime on either side of the shower.

What is the control group?

The side that was sprayed with water.

Homer notices that his shower is covered in a strange green slime. His friend Barney tells him that coconut juice will get rid of the slime. Home decides to check this out by spraying half of the shower with water. After 3 days of "treatment," there is no change in the appearance of the green slime on either side of the shower.

What is the experimental group?

The side that was sprayed with coconut juice,

Homer notices that his shower is covered in a strange green slime. His friend Barney tells him that coconut juice will get rid of the slime. Home decides to check this out by spraying half of the shower with water. After 3 days of "treatment," there is no change in the appearance of the green slime on either side of the shower.

What are the constants?

Length of treatment and location.

Homer notices that his shower is covered in a strange green slime. His friend Barney tells him that coconut juice will get rid of the slime. Home decides to check this out by spraying half of the shower with water. After 3 days of "treatment," there is no change in the appearance of the green slime on either side of the shower.

What is the indpendent variable?

The coconut juice

Homer notices that his shower is covered in a strange green slime. His friend Barney tells him that coconut juice will get rid of the slime. Home decides to check this out by spraying half of the shower with water. After 3 days of "treatment," there is no change in the appearance of the green slime on either side of the shower.

What is the dependent variable

How clean the shower is.

Homer notices that his shower is covered in a strange green slime. His friend Barney tells him that coconut juice will get rid of the slime. Home decides to check this out by spraying half of the shower with water. After 3 days of "treatment," there is no change in the appearance of the green slime on either side of the shower.

What should Homer's conclusion be?

Homers conclusion should be that the coconut juice does not work and he needs to try a different method

What is an independent variable

variable that is manipulated

What is an dependent variable?

What is measured or observed during an experiement.

What is a control variable?

variable that stays the same

Why is it important to wear goggles during an experiment?

To avoid things or chemicals getting into your eyes, which could harm you.

When completing an experiment, should you work alone?

No, you should not work alone because there would be more room for error and there is no one to help you if you accidentally harm yourself.