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Env Sci Unit1 Test Flashcards | StudBud
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Env Sci Unit1 Test
Env Sci Unit1 Test
25 terms
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1,329 plays
metrics, atoms, periodic table, bias
Flashcards
25 cards
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Practice quiz
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Questions
25
Answers
1
How many variables should be tested during one experiment?
1
2
as many as you want
3
2
What is the reason for a change in the phase of matter?
gas
iron
all of them
heat/energy
3
What is the smallest, simplest part of matter?
all are equal
a millimeter
an element
an atom
4
What instrument would you use to measure 45 mL of water?
metric ruler
balance
beaker
graduated cylinder
5
What do the letters Li mean?
Liberia
Labrador
Lithium
Libya
6
If an atom has 12 protons, how many electrons does it have?
5
24
Unknown
12
7
Wash laundry
with soap A
, another load
with soap B
., and another
without
soap.
Which is the control?
a load w/o detergent
load w/ detergent A
load w/ detergent B
Both loads
8
Which is the dependent variable (being measured, data collected or counted)?
tape
number of swings
protractor
length of string
9
How many ml in 4.6 cm?
.046
460
46
cannot be done
10
Which state of matter is the most energized?
gas
liquid
plasma
solid
11
In this experiment, what is the independent variable (what is changed/tested)?
length of string
all of them
angle of drop
amount of mass
12
Which is not a unit of the metric system?
grams
liter
meter
ounces
13
What is the difference between Hydrogen (gas) and Gold (solid)?
The phase each are in
all are true
The number of protons
The movement of the atoms
14
Why should we use the Metric System?
All are reasons
It's easier, based on a of 10's
It's more precise or exact
It's more Universal
15
3
Li
7
How many protons in this element?
7
10
4
3
16
3
Li
7
How many electrons in this element?
3
4
7
10
17
How many mm in 15 cm?
.15
15
1500
150
18
Jeremy tested his laundry detergent A vs. brand B. Which is a good hypothesis?
None are good hypotheses
laundry detergent C is the best
He noticed laundry stains do not come out with his detergent
Detergent B works better than detergent A
19
How many mm in a cm?
.10
100
10
1
20
3
Li
7
How many neutrons in this element?
4
3
10
7
21
What is true of water molecules in ice?
they are moving very slowly/vibrating
they are at a dead stop
they are moving over and past each other
they are moving really fast
22
What is not an example of plasma?
The Sun
A Candle's Flame
Super Nova Explosion
lightning
23
Why redo an experiment?
To form a hypothesis
To make an observation
To collect data
To verify the data
24
What causes a pendulum to swing at different speeds?
length of string
angle of drop
all of them
amount of mass
25
How are molecules in a gas moving?
they are 'frozen' in place
they are moving past each other, but still connected
they are moving rapidly and are not connected
they disappear
