1.0 Scientific Method Physical Science LHS 24-25

1.0 Scientific Method
Physical Science LHS 24-25

Directions:

​Every slide that is white contains information

When your slide is white that means it contains information that should write down in your notes. You should then use this information to answer the questions that follow on the purple slides to see if you understand.

Match

Match the following

• white slide =

• purple slide =

• I do not know

information that I should write down

practice problems to see if I understand

Go backwards and read the directions

• information that I should write down

• practice problems to see if I understand

• Go backwards and read the directions

Reorder

Reorder the following steps in the scientific method in order from beginning to end

• come up with a problem statement

• create hypothesis

• run experiment

• collect data

• analyze data

1

2

3

4

5

• 1
• 2
• 3
• 4
• 5

To use the Scientific Method Your Question has to be "Testable"

What does this mean? This means

Types of Variables: variables are factors in an experiment that can be changed

Independent Variable - the variable manipulated/changed by the experimentor

Dependent Variable - the variable you are collecting data on

Control Variable - the variable(s) that remain constant throughout an experiment

Multiple Choice

A student wishes to determine the effects of colored light on plant growth. The independent variable is

• the student

• different colored light

• plant growth

• amount of water

Multiple Choice

A student wishes to determine how the addition of soap changes the surface tension of water. The dependent variable is

• amount of soap

• amount of water

• surface tension of water

• temperature of water

Multiple Select

A student wishes to determine the effect of microwave radiation on plant growth. An acceptable control variable for this is (check all that apply)

• amount of microwave radiation received by each plant

• the amount that the plant grows

• the type of plant used in the experiment

• the amount of water each plant receives

Match

Match the following in relation to the following situation:

My chickens are not laying enough eggs. I think that if I buy more expensive chicken food then my chickens will lay more eggs. I will get three groups of chickens; group one will get generic food, group 2 will get a little bit more expensive food, and group 3 will get the most expensive food. I will then collect data on how many eggs each group of chickens lays each day.

• problem statement

• hypothesis

• independent variable

• dependent variable

• data to collect

my chickens are not laying enough eggs

more expensive food = more eqggs each da

price of food

number of eggs per day

number of eggs for each group of chicken

• my chickens are not laying enough eggs

• more expensive food = more eqggs each da

• price of food

• number of eggs per day

• number of eggs for each group of chicken

The group that DOES receive the experimental treatment

​Experimental Group

The group that DOES NOT receive the experimental treatment

​Control Group

Control Groups vs. Experimental Groups

Multiple Choice

A student sets up an experiment to determine how the addition of salt to water affects the boiling point of the water. Identify the appropriate control group in this experiment.

• The group of water samples that receive 10 g of salt

• The group of water samples that receive 15 g of salt

• The group of water samples that receive 20 g of salt

• The group of water that does not receive salt

Multiple Select

A student sets up an experiment to determine how the addition of salt to water affects the boiling point of the water. Identify the appropriate experimental groups in this experiment (check all that apply)

• The group of water samples that does not receive salt

• The group of water samples that receives 5 g of salt

• The group of water samples that receives 10 g of salt

• The group of water samples that receives 15 g of salt

Match

Match the following terms with the correct meaning.

• data

• independent variable

• dependent variable

• control group

• experimental group

information gathered

variable changed by experimenter

variable that changes in response to the independent variable

group that does not receive the experimental treatment

group that receives the experimental treatment

• information gathered

• variable changed by experimenter

• variable that changes in response to the independent variable

• group that does not receive the experimental treatment

• group that receives the experimental treatment

Drag and Drop

A student wishes to determine how the amount of fertilizer used effects the height a plant grows. The variable that the student can manipulate/change is ​

Placeholder

and the varialbe the student will collect data on is the ​ ​

Placeholder

​. A varialble that should remain the same throughout the experiment is the ​

Placeholder

Therfore, the amount of fertilizer is the ​

Placeholder

, the height of the plant is the ​

Placeholder

, and the type of plant used is the CONTROL VARIABLE.

Drag these tiles and drop them in the correct blank above

the amount of fertilizer used

height of the plant

independent variable

dependent variable

type of plant being used

collected using measurements and always includes numbers and a unit

Ex. 14.0 cm, 25.0 C, 3 days

​Quantitative Data

collected using your senses
- what does it look like
- what does it feel like
- what does it smell like
- does in make a sound
- white, dull, smooth, hot

Qualitative Data

Types of DATA

Dropdown

A student is collecting data. The students observes that an unknown substance is white; this is a ​

Select answer

observation. The student observes that there are 3.5g of the substance present. This is a ​

Select answer

observation.