3. Bell ringer # 2
• Write the correct volume in ml for each
graduated cylinder.
4. Bell Ringer # 3
• What is the Volume of the following?
1. 2.
3. 4.
5.
6. #4
3. Which object has a greater density?
Density of Water=1 g/cm3
a. b.
4.
7. #5
Find the density of an object whose
mass is 25g and whose volume is
82.3cm3.
D=m/v
3
8. Bell Ringer #6
Mr. Brummett wanted to see if larger objects fall
faster than smaller objects. Mr. Brummett suggested
dropping students to test his hypothesis, but thought
it would cause too much paper work. He decided to
use a large and small metal sphere instead (just like
Galileo).
What is the independent variable?(what is changed
between the two groups?)
Constant?(the variable kept the same throughout the
experiment)
Dependent Variable? (variable that you
observed/measured)
9. Bell Ringer # 7
Marcus usually uses Duracell batteries for his radio
controlled car. He gets around 5 hours of playing time
and begins to feel that his battery life should last
longer. He decides that he is going to design an
experiment to see if there are better batteries. Define
the following:
Independent variable
Dependent variable
Controlled variable
10. Bell Ringer # 8
Justin usually blows his nose using Kleenex tissues. His snot
keeps leaking through the tissue. He decided he is going to
create an experiment to find out if there is something better.
What is his dependent variable?
A. amount of tissue
B. mass of snots the tissue can hold
C. Justin
D. type of tissue
E. Kleenex
11. Bell Ringer # 9
Mr. PALMER wanted to see how different types of music
affected plant growth. He played different types of music: heavy
metal, rap, R&B, alternative, pop, country, and classical music.
Identify the independent and dependent variable.
A. high plant growth
B. Plant growth
C. Mr. Griffin
D. types of music
E. classical music resulted in the highest plant growth
12. Bell Ringer # 10
Mr. Camby wanted to see if sugar
in water would affect plant
growth. Design the experiment.
Hypothesis-
Independent Variable-
Dependent Variable-
Control-
13. Bell Ringer # 11
Mr. Sanchez wanted to see if hydroponics grows
plants faster than soil. Design the experiment
and identify the independent, dependent, and
control and constants.
vs.
14. Bell Ringer # 12`
Describe the relationship between temperature
and states of matter.
15. Bell Ringer # 13
What does the word property mean on the
following phrase?
-Flammability is a chemical property of
oil.
What do you think the difference between a
physical property and chemical property is?
16. Bell Ringer # 14
Put the following in order from smallest to largest
1. Molecules
2. Electrons
3. Protons/neutrons
4. Atoms
5. cells
17. Bell Ringer # 15
How are rainbows formed?
What causes this
phenomenon? Is it
matter?
18. Bell Ringer # 16
What are the 3 subatomic
particles of an atom?
20. Bell Ringer # 18
1.Draw the element card for this
atom
21. Bell Ringer # 19
• Draw a Bohr model for magnesium and
Potassium.
• How many valence electrons does Aluminum
have?
22. Bell Ringer # 20
How many valence electrons do the following
elements have?
Nitrogen, Neon, Boron, and Lithium.
How many electron shells do they each have?
24. 1. What type of charge does a proton have?
1. How many electrons can the 2nd shell of an atom
hold?
1. What type of charge does an electron have?
1. What type of charge does neutron have?
1. When two opposite charged atoms bond, this is
called what? Covalent bond or ionic bond.
1. Water (H2O), is an example of a what? Covalent
or ionic bond?
26. Bell Ringer # 24
Name one physical property and
one chemical property of wood?
A chemical property is a characteristic that can only be
seen when the material changes and a new material is
formed.
27. Bell Ringer # 25
List examples
Chemical Reactions Physical Reactions
28. Bell Ringer # 26
List examples
Endothermic reactions Exothermic reactions
29. Bell Ringer # 27
• When you hold a ball above your head, does it
have potential or kinetic energy?
• How are sound waves and light waves
different?
• Describe how a compass works.
30. Bell Ringer # 28
Imagine that you drop a ball. It
bounces a few times and then it stops.
Your friend says that the energy that
the ball had is gone. Where did the
energy go? Evaluate your friend’s
statement based on the conservation
of energy.
31. #29
In one or two
sentences, describe
what a food/energy
pyramid is.
32. Bell Ringer # 30
1. List all five trophic levels in
an energy pyramid.
2. Then name one organism for
each trophic level.
33. Bell Ringer # 31
Explain the difference
between mass and
weight. How are they
related?
34. Bell Ringer # 32
Explain in writing or draw
what it means when
friction and gravity affect
an object in motion.
35. Bell Ringer # 33
Complete the cloze sentence.
An object in _________stays in _________ and
an object at ________ stays at _________
unless acted upon by an outside________.
For every ________ there is an _________ and
opposite _________.
36. Bell Ringer # 34
Suppose two astronauts are outside a
space shuttle orbiting Earth. The audio
speaker in the helmet of one astronaut
quits working. The other astronaut is I
foot away and shouts at him. Can the
first astronaut hear the message?
Explain.
37. Bell Ringer # 35
What is the relationship between magnetism
and electricity?
What is a projectile?
