DO NOW: Looking at the picture below. Tell me three unsafe things that are happening in this picture and why are they unsafe?
I see some people are ______________. This is unsafe because __________.
When working with materials that might fly into the air and hurt someone's eye you should wear
If you get hurt or injured in any way in the lab, you should
Before doing experiments involving a heat source, you should know the location of the
If you think you may have gotten a chemical in your eye, you should
When working with a flame or a heat source, you should
If a beaker of water falls to the floor and breaks, you should
Types of Data
Scientists collect two different types of data: qualitative data and quantitative data.
Qualitative Data: Qualitative data are descriptions in words of what is being observed. They are based
on some quality of an observation, such as color, odor, or texture.
Quantitative Data: Quantitative data are numeric measurements. The data are objective- they are the
same no matter who measures them. They include measurements such as mass, volume, temperature,
distance, concentration, time, or frequency.
Example
Suppose a marine biologist observes the behavior and activities of dolphins. She identifies different
dolphins within the group and observes them every day for a month. She records detailed observations
about their behaviors. Some of her observations are qualitative data and some are quantitative data.
Qualitative data examples:
• Dolphin colors range from gray to white.
• Dolphins in a pod engage in play behavior.
• Dolphins have smooth skin.
Quantitative data examples:
• There are nine dolphins in this pod.
• Dolphins eat the equivalent of 4-5% of their body mass each day.
• The sonar frequency most often used by the dolphins is around 100kHz.
Notice the qualitative data are descriptions and the quantitative data are objective, numerical
measurements; a quantity.
Decide whether this data is qualitative or quantitative.
There were four dogs in the group.
Decide whether this data is qualitative or quantitative.
The rock sample was reddish brownish.
Decide whether this data is qualitative or quantitative.
The dogs were small.
Decide whether this data is qualitative or quantitative.
The first plant specimen had 3 more leaves than the second specimen.
Scientific Lab Tools Review Using Quizlet:
1) Go to the website: https://quizlet.com/92307726/flashcards
2) Complete one (1) of the Study activities.
3) Then play one of the games under Play.
Scientific Method Review Using Quizlet:
1) Go to the website: https://quizlet.com/310210252/scientific-method-8th-grade-flash-cards/
2) Complete one (1) of the Study activities.
3) Then play one of the games under Play.