Open systems like the oven allows energy to enter and leave
A.
true
B.
false
12.
Closed systems like the phone allows energy to enter and leave
A.
true
B.
false
13.
Functioning systems must have an energy input
A.
True for both open and closed systems
B.
True for both open systems only
C.
True for both closed systems only
14.
Which is true?
A.
Energy can flow in a system, but not matter
B.
Matter can flow in a system, but not energy
C.
Both energy and matter can flow in a system
15.
What is flowing within (inside) the Earth System?
A.
Matter like air and water
B.
Energy like heat and solar
C.
Both energy (like heat & solar) AND matter (like air and water)
D.
No matter or energy flows in the system
16.
What is flowing within (inside) the Fish Tank System?
A.
Matter like water, air, and fish
B.
Energy like heat and solar
C.
Both energy (like heat & solar) AND matter (like air, fish, and water)
D.
No matter or energy flows in the system
17.
What would be an energy input for the solar freezer?
A.
light energy
B.
kinetic energy
C.
electrical energy
D.
food
18.
What would be an matter input for the solar freezer?
A.
light energy
B.
kinetic energy
C.
electrical energy
D.
food
19.
Energy can transfer from one system to another system.
A.
True
B.
False
20.
Energy from what system transfers to this solar powered freezer system?
A.
sun
B.
light
C.
electrical
D.
wall socket
21.
Energy causes ___________ to occur.
A.
change
B.
motion
C.
age
22.
What type of energy is in this picture?
A.
kinetic
B.
potential
C.
electromagnetic
D.
solar
23.
When plants convert the sun's energy into food, which type of energy does the sun energy become?
A.
kinetic
B.
chemical
C.
thermal
D.
solar
24.
What form of energy?
A.
Mechanical (kinetic) energy
B.
Chemical (kinetic) energy
C.
Sound (potential) energy
D.
Sound (kinetic) energy
25.
What kind of energy?
A.
Thermal (kinetic) energy
B.
Thermal (potential) energy
C.
Nuclear (kinetic) energy
D.
Mechanical (kinetic) energy
26.
What form of energy?
A.
thermal
B.
electrical
C.
mechanical
D.
radiant
27.
What kind of energy?
A.
radiant
B.
electrical
C.
thermal
D.
chemical
28.
What kind of energy?
A.
Thermal (kinetic) energy
B.
Chemical (kinetic) energy
C.
Chemical (potential) energy
D.
Mechanical (kinetic) energy
29.
Which form of energy is being released?
A.
light (potential)
B.
Light (kinetic)
C.
chemical (kinetic)
D.
Electrical (kinetic)
30.
What form of energy do plants use to make sugar in the photosynthetic process?
A.
heat energy
B.
chemical energy
C.
solar energy
D.
kinetic energy
31.
A _____________________ is something that scientists use to represent an object or process
A.
mass
B.
matter
C.
model
D.
weight
32.
Select ALL that is true
A.
A model is a simple representation of a system
B.
Models are expensive!
C.
A toy car is a model of a real car
D.
A model helps you understand a system
33.
Pick the reasons why we use models
A.
Models are expensive
B.
Models help you understand complex systems
C.
Models are used when systems are too expensive or impossible to use
34.
The manipulation of a model in such a way that it behaves like a real system is termed:
A.
simulation
B.
modeling
C.
manipulation
D.
organization
35.
Heat is ___ of the system.
A.
an input
B.
a subsystem
C.
a trigger
D.
an output
36.
Models can be helpful in scientific investigations because
A.
it may not be possible to work with the real thing.
B.
they can be smaller and more manageable than the real thing.
C.
they can be safer to work with than the real thing.
D.
All possible choices
37.
The kidneys are organs that filter wastes out of the blood stream. Which of the following objects could best be used to make a simple model of a kidney?
A.
block of wood
B.
coffee filter
C.
plastic bag
D.
water pump
38.
A tennis ball could be used to represent the sun because it's round and yellow. Which of the following could also be used to model the sun?
A.
a light bulb
B.
an empty cup
C.
an eraser
D.
a kleenex box
39.
What is a scientific model?
A.
A representation of an object but smaller
B.
An exact representation made of similar material
C.
A representation of an object or system
D.
A familiar copy of an object
40.
What is the advantage of creating a model of a dinosaur?
A.
they are too large to easily study
B.
they are too complicated to study
C.
Real dinosaurs cannot be studied because they are extinct
D.
The model is safer to work with.
41.
True or False--A model can never be revised.
A.
True
B.
False
42.
If you want to compare sizes and distances in a model, then you should make a ___ model.
A.
planet
B.
scale
C.
map
D.
huge
43.
A drawing, diagram, or map are types of ___.
A.
mental models
B.
three-dimensional models
C.
two-dimensional models
D.
plastic models
44.
Scientists use ___________ to understand how systems work.
A.
models
B.
figures
C.
process
D.
energy
45.
Scientists use a ___ to represent something that has too many parts, is too big, or is too small to investigate in real life.
A.
cars, dolls, people
B.
model
C.
scale
D.
telescope
46.
What form of energy is stored in the bonds between molecules of matter?
A.
chemical energy
B.
heat energy
C.
kinetic energy
D.
mechanical energy
47.
the ability to do work
A.
potential energy
B.
matter
C.
photons
D.
energy
48.
Stored energy that results from the position or shape of an object is called...
A.
thermal
B.
potential
C.
kinetic
D.
gravitational
49.
All of the different forms of energy move making them kinetic energy
A.
true
B.
false
50.
All of the different forms of energy can be stored energies.
51.
All of the different forms of energy can be stored energies.
A.
true
B.
false
52.
Lightning during a thunderstorm is an example of what form of energy?
A.
Radiant (potential) energy
B.
Radiant (kinetic) energy
C.
Electrical (potential) energy
D.
Electrical (kinetic) energy
53.
Which of the followings are examples of thermal energy?
A.
a violin string plucked, talking, ringing telephone
B.
candle flame, light bulb light
C.
boiling water, steam, heat from a flashlight
D.
energy from the sun (fusion, energy from a nuclear power plant (fission)
54.
Energy is made out of...
A.
matter
B.
atoms
C.
photons
D.
nothing
55.
Energy takes up space
A.
true
B.
false
56.
A baseball held by a pitcher has _____________energy.
A.
kinetic
B.
chemical
C.
potential
D.
thermal
57.
Stored energy between atoms, ions, and molecule is __________________ energy?
