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WorksheetsScience Midterm Review
Total questions: 45
Worksheet time: 25mins
Name
Class
Date
1.
I performed an experiment on plant growth and found that plants grew larger if exposed to flashing lights. What would make my experiment valid?
a)
Having a plant nursery look at my plants
b)
Having it published in Scientific American magazine
c)
Having other scientists repeat/replicate it and get the same results
d)
Having my teacher say it was right
2.
A student performed an experiment and did not get the results she expected from her hypothesis. When writing up her lab report, what should she say about her experiment?
a)
The hypothesis is correct.
b)
The results do not support the hypothesis.
c)
The hypothesis has been disproven.
d)
The experiment is bad.
3.
If an experiment's results do not support a hypothesis, what should you do next?
a)
Change the hypothesis to match the results.
b)
Throw it all out and walk away.
c)
Investigate further.
d)
Keep doing the experiment until the results match.
4.
One example of a pseudoscience is
a)
Botany
b)
Astrology
c)
Astronomy
d)
Ecology
5.
Why is ghost-hunting considered a pseudoscience?
a)
It has empirical evidence to support it.
b)
Not enough people believe in the metaphysical.
c)
The ideas aren't testable.
d)
The ideas aren't logical.
6.
What would be the best way to model a cell's structure?
a)
a 3D model
b)
a picture
c)
a graph
d)
a written description
7.
If an unidentified liquid is poured into a glass of water and it forms a layer underneath the water, the liquid
a)
is more dense than water
b)
is less dense than water
c)
has a lower volume than the water
d)
has a higher mass than the water
8.
A scientific theory can change but is rarely discarded (thrown away).
a)
true
b)
false
9.
If a liquid changes state to form a solid, what has happened to the particles?
a)
They have gained energy.
b)
They have gained mass.
c)
They have lost energy.
d)
They have lost mass.
10.
If a rock on the surface of the moon is brought to Earth, what happens to its weight?
a)
it increases
b)
it decreases
c)
it stays the same
d)
it goes up then down
11.
If a rock on the surface of the moon is brought to Earth, what happens to its mass
a)
it increases
b)
it decreases
c)
it stays the same
d)
it goes up then down
12.
If 3 materials have the same volume but different masses, their densities will be
a)
the same
b)
different
c)
higher than water
d)
lower than water
13.
Which is not a pseudoscience?
a)
Bigfoot
b)
Astrology
c)
Superstitions
d)
Astronomy
14.
What is it called when a scientist runs many different trials for a single experiment?
a)
replication
b)
variables
c)
repetition
d)
controls
15.
Kevin wanted to test which ball would bounce higher, a basketball or soccer ball. What would the dependent variable in this experiment be?
a)
The type of ball.
b)
How high the ball bounced.
c)
The surface that he dropped them on to.
d)
The height that he dropped the balls.
16.
Kevin wanted to test which ball would bounce higher, a basketball or soccer ball. What would the independent variable in this experiment be?
a)
The type of ball.
b)
How high the ball bounced.
c)
The surface that he dropped them on to.
d)
The height that he dropped the balls.
17.
Kevin wanted to test which ball would bounce higher, a basketball or soccer ball. What would one of the constant variables in this experiment be?
a)
The type of ball.
b)
How high the ball bounced.
c)
The surface that he dropped them on to.
d)
The time it took the balls to bounce.
18.
All matter is made of what?
a)
energy
b)
atoms
c)
electrons
d)
compounds
19.
An atom's overall charge is ___________.
a)
positive
b)
depends
c)
neutral
d)
negative
20.
Neon has an atomic number of 10 and an atomic mass of 20.180. How many protons, electrons, and neutrons will it have?
a)
P=10 E=10 N=11
b)
P=5 E=5 N=10
c)
P=10 E=10 N=10
d)
P=10 E=5 N=5
21.
The yellow atoms are called
a)
metals
b)
nonmetals
c)
metalloids
d)
noble gases
22.
The atoms along the staircase are called
a)
metals
b)
nonmetals
c)
metalloids
d)
noble gases
23.
The majority of elements on the periodic table are
a)
man made.
b)
nonmetals.
c)
metals.
d)
gases.
24.
Elements in the same ___________ are most chemically similar.
a)
group/family
b)
period
c)
club
d)
table
25.
Na is the element sodium's
a)
Formula.
b)
Compound.
c)
Symbol.
d)
Name.
26.
All of the following are characteristics of carbon dioxide. Which characteristic makes it a compound?
a)
Vital to life on earth
b)
Gas at room temperature
c)
Made of two different elements
d)
It is on the periodic table.
27.
Which one of these is a compound?
a)
Oxygen
b)
Water
c)
Copper
d)
Carbon
28.
A gas
a)
has a definite shape but no definite volume
b)
has a definite volume but no definite shape
c)
has particles that move throughout the whole container
d)
has very compact particles
29.
Which state of matter has molecules that slide past each other but stay close together? They do not form a regular pattern.
a)
solid
b)
liquid
c)
gas
30.
Water and Kool-Aid are mixed together. Hot water, coffee and sugar are mixed together. Which substance is the solvent in both?
a)
Water
b)
Coffee
c)
Kool-aid
d)
Sugar
31.
Which of the following is an example of a solution?
a)
Water and Sand
b)
Water and Pepper
c)
Water and Sugar
d)
Water and Oil
32.
Which of the following word pairs correctly completes the sentence below?
_______ are corrosive substances characterized as having a strong smell, a sour taste, and a _______.
_______ are corrosive substances characterized as having a strong smell, a sour taste, and a _______.
a)
Acids; pH less than 7
b)
Acids; pH greater than 7
c)
Bases; pH greater than 7
d)
Bases; pH less than 7
33.
Which of the following is a base?
a)
orange juice
b)
water
c)
vinegar
d)
dishwashing detergent
34.
What is neutral on the pH scale?
a)
7
b)
14
c)
P shape
d)
D shape
35.
The size, shape, and state can change but the matter is still made of the same particles.
a)
Mass
b)
Chemical Change
c)
Physical Change
d)
Weight
36.
The original substance change and a different substance forms.
a)
Physical Change
b)
Matter
c)
Chemical Change
d)
Atoms
37.
The amount of matter in an object is its
a)
mass
b)
volume
c)
density
d)
weight
38.
The amount of space an object takes up is its
a)
mass
b)
volume
c)
density
d)
weight
39.
How much mass is in a certain amount of volume is called
a)
mass
b)
volume
c)
density
d)
weight
40.
Mass is measured with what units?
a)
grams (g)
b)
centimeters (cm)
c)
milliliters (mL)
d)
pounds (lbs)
41.
Volume is measured with what units?
a)
grams (g)
b)
centimeters (cm)
c)
milliliters (mL)
d)
pounds (lbs)
42.
Volume is measured with what units?
a)
grams (g)
b)
centimeters3 (cm3)
c)
centimeters (cm)
d)
pounds (lbs)
43.
If you travel to the moon will your mass be greater than, less than, or the same as on Earth?
a)
greater
b)
same
c)
less
d)
What?!
44.
One side of a cube is 2 cm long. Its mass is 24 g. What is the density of the cube?
a)
12 g/cm3
b)
48 g/cm3
c)
3 g/cm3
d)
26 g/cm3
45.
How can volume be determined through water displacement?
a)
measure the graduated cylinder
b)
drop object in cylinder and measure amount water rises
c)
measure length, width, and height
d)
place on a scale
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