Below please find questions and answers that will help you.
- You should wear...
- Eating, drinking, and/or cosmetics are...
- You should never reflect...
- Always hold...
- Never taste...
- Unknown chemicals are...
- You should report...
- Never smell...
- You should properly...
- Never reach...
- Wash...
- Careless behavior is...
- Ask...
- Personal possessions, books, and papers not related to the procedure...
- Dangling jewelry and loose clothes...
- Read...
- Unbound hair...
- Listen to...
- All materials are to be...
- Perform laboratory activities only...
- What is the silent killer?
- Based on the Silent Killer article, what should you have in your home?
- What were some main lessons learned from the iPod, Scientists and Frog Articles?
- What is Science?
- What are some main science subject areas?
- Biology is the study of...
- Science is the search for the...
- Chemistry is the study of...
- Earth Science is the study of the...
- Physics is the study of the...
- Technology is the...
- You estimate there to be 90 jelly beans in a jar. If there are actually 130 jelly beans, your percentage error is...
- Briefly explain why we have seasons in the Northern and Southern Hemispheres.
- What common mistake do people make regarding summer and winter?
- Define measure.
- List some measurement tips.
- List some common metric units in order of decreasing size.
- List some common metric conversions.
- What is the main difference between precision and accuracy?
- Which metric unit would be most appropriate for measuring the length of your sneaker?
- List one reason why there has been a higher percentage of kidney stones found in younger people.
- A person's foot length is 20.0 cm. If the Height : Foot length ratio is 5.8, what is the person's height?
- A person's height is 200.0cm. If the Height : Foot length ratio is 5.8, what is the person's footlength?
You should wear...
safety glasses, aprons, and/or other safety gear when it is required.
Eating, drinking, and/or cosmetics are...
not allowed.
You should never reflect...
direct sunlight using any type of equipment (such as a mirror).
Always hold...
test tubes or other types of containers away from ourselves & other people.
Never taste...
any chemical unless the teacher informs us that it is safe.
Unknown chemicals are...
not to be mixed.
You should report...
any spills and/or accidents to the teacher.
Never smell...
any chemical unless the teacher informs us that it is safe to draw the scent
toward our nose by using our hand.
You should properly...
and safely use all equipment.
Never reach...
over a hot plate, chemicals or other laboratory equipment.
Wash...
our hands with soap & water when instructed to do so by the teacher.
Careless behavior is...
not allowed.
Ask...
questions and/or state concerns if we are unsure about procedure.
Personal possessions, books, and papers not related to the procedure...
should be put away.
Dangling jewelry and loose clothes...
are not to be worn because they are a safety hazard.
Read...
all directions before starting a laboratory activity.
Unbound hair...
should be held back when doing experiments.
Listen to...
proper precautions before we begin our laboratory activities.
All materials are to be...
returned to their proper locations & our work area is to be cleaned when we
are finished.
Perform laboratory activities only...
with the direct supervision of the teacher.
What is the silent killer?
Carbon Monoxide (CO)
Based on the Silent Killer article, what should you have in your home?
Carbon Monoxide detector
What were some main lessons learned from the iPod, Scientists and Frog Articles?
iPod Article Lesson: Don't listen to loud music
Scientist Article Lesson: Don't make quick judgments about
people.
Frog Article Lesson: Never give up and use positive words of
encouragement
What is Science?
Science is the search for the true nature of our universe and how it works
based on our observations.
What are some main science subject areas?
Biology, Chemistry, Earth Science, Physics, and Technology
Biology is the study of...
living things from their internal environments to their external environments.
Science is the search for the...
true nature of our universe and how it works based on our observations.
Chemistry is the study of...
matter, what it is made of, and how it undergoes changes.
Earth Science is the study of the...
history, structure, and interactions that occur in, on, and around our planet.
Physics is the study of the...
motion, forces, and energy that exist throughout the universe.
Technology is the...
use of knowledge to enhance capabilities and satisfy wants and needs.
You estimate there to be 90 jelly beans in a jar. If there are actually 130 jelly beans, your percentage error is...
% Error = Measured Value - Accepted Value x 100
_________________________________
Accepted Value
Note: Remember, you do not have to memorize this formula because
it will be given to you when you take the quiz.
Answer: The Measured value for the # of jelly beans is 90 and
the Accepted value (the actual # of jelly beans) is 130.
Now we plug in our #s and do some math:
Measured (90) - Accepted (130) x 100
_______________________________
Accepted (130)
90 - 130 x 100
= ___________
130
= 40 x 100
___________
130
= 0.30769 x 100
= 30.8%
Therefore, your estimation was off by 30.8%.
Briefly explain why we have seasons in the Northern and Southern Hemispheres.
We have seasons because the earth is on a tilt and the amount of direct
sunlight hitting the earth varies (changes) during the course of the year.
When we experience summer in the Northern Hemisphere, it is because the earth
is tilted toward the sun which gives the Norther Hemisphere more direct
sunlight. During this time, the Southern Hemisphere does not get direct
sunlight and they experience Winter.
When we experience winter in the Northern Hemisphere, it is because the earth
is tilted away from the sun which gives the Norther Hemisphere less direct
sunlight. During this time, the Southern Hemisphere gets more direct sunlight
and they experience Summer.
What common mistake do people make regarding summer and winter?
People think that the earth is actually closer to the sun in the summer and
further from the sun in the winter when in actuality it is the opposite (the
sun is truly closer to the earth in the winter and the sun is truly further
from the sun in the summer).
Define measure.
Measure means to compare and object or process to a standard.
List some measurement tips.
When measuring a line, be sure that your ruler is straight (parallel) with the
line.
When using a ruler, it's always a good idea to start at 0 whenever possible.
Units should be listed after your number.
Some ruler edges start at 0 and some do not so be aware before you start
measuring.
List some common metric units in order of decreasing size.
Kilometer, meter, centimeter, decimeter, millimeter, micrometer
List some common metric conversions.
1 kilometer (km) = 1000 meters (m)
1 meter (m) = 100 centimeters (cm)
1 centimeter (cm) = 10 millimeters (mm)
1 millimeter (mm) = 1000 micrometers (um)
What is the main difference between precision and accuracy?
Precision is the repeatability of a measurement and accuracy is the closeness
a measurement is to the actual (accepted) value.
Which metric unit would be most appropriate for measuring the length of your sneaker?
Centimeters
List one reason why there has been a higher percentage of kidney stones found in younger people.
There is a higher percentage of kidney stones found in younger people due to:
drinking too much soda, eating/drinking foods that are high in salt (NaCl),
eating foods that are high in fat or going on diets that are high in protein.
A person's foot length is 20.0 cm. If the Height : Foot length ratio is 5.8, what is the person's height?
It's always a good idea to list your important information first:
Foot length: 20.0cm
Height to Foot length Ratio: 5.8
Height of the person: H (H is what we are looking for)
(This is called our variable)
__H__ = __H__
F F
__H__ can be expressed as a ratio. We have that ratio, it's 5.8!
F
so we can now plug in our numbers:
5.8 = __H__
20.0cm
We can now set up a proportion. We can do this by taking 5.8 and placing it
over 1 so that one side of the equal sign resembles the other.
__5.8__ = __H__
1 20.0cm
Now we can cross multiply:
5.8 x 20.0cm = 1 x H
116.0 cm = H
Therefore, the height of the person could very well be 116.0 cm.
A person's height is 200.0cm. If the Height : Foot length ratio is 5.8, what is the person's footlength?
It's always a good idea to list your important information first:
Foot length: F (F is what we are looking for)
(This is called our variable)
Height to Foot length Ratio: 5.8
Height of the person: 200.0 cm
__H__ = __H__
F F
__H__ can be expressed as a ratio. We have that ratio, it's 5.8!
F
so we can now plug in our numbers:
5.8 = __200.0cm__
F
We can now set up a proportion. We can do this by taking 5.8 and placing it
over 1 so that one side of the equal sign resembles the other.
__5.8__ = __200.0 cm__
1 F
Now we can cross multiply:
5.8 x F = 1 x 200.0 cm
5.8F = 200.0 cm
Since we are looking for F, we have to get F ALONE!
We can get F ALONE by separating it from the 5.8 and we do this
by dividing both sides by 5.8:
__5.8F__ = __200.0 cm__
5.8 5.8
so 5.8 divided by 5.8 gives us 1F or just F which is what we needed.
Note: We divided both sides by 5.8 because what is done to one
side must be done to the other side.
So F = __200.0 cm__
5.8
F = 34.5 cm
Therefore, the foot length of the person is 34.5 cm.
