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6th Grade Science
Test Description: 1st semester exam
Instructions: Answer all questions to get your test result.
1) A substance that cannot be chemically broken down into simpler substances.
A
pure substance
B
compound
C
molecule
D
element
2) A substance formed when two or more chemical elements are chemically bonded together.
A
element
B
compound
C
molecule
D
pure substance
3) What is the symbol for hydrogen?
A
Ha
B
Hr
C
H
D
He
4) What is the symbol for Sodium?
A
S
B
So
C
Na
D
Sd
5) What does the chemical symbol S stand for?
A
sulfur
B
sodium
C
selenium
D
sulfide
6) What does the chemical symbol N stand for?
A
nickel
B
nobelium
C
nitrogen
D
sodium
7) Which of the following is a chemical formula?
A
S
B
Al
C
Zn
D
NaCl
8) Tell me which of the following represents chemical change.
A
paper tearing
B
logs burning
C
glass shattering
D
ice melting
9) Which of the following represents a physical change?
A
fireworks exploding
B
logs burning
C
water freezing
D
a banana rotting
10) Which of the following is a property of metal?
A
brittle
B
low density
C
insulator
D
conducts electricity
11) The layers of the Earth in order from outside to inside are:
A
inner core, outer core, mantle, crust
B
crust, mantle, outer core, inner core
C
outer core, crust, mantle, inner core
D
mantle, crust, inner core, outer core
12) About how many tectonic plates make up the Earths lithosphere?
A
214
B
8
C
48
D
14
13) What layer of the Earth slides on top of the Asthenosphere allowing the plates to move?
A
lithosphere
B
hydrosphere
C
mantle
D
atmosphere
14) At what type of boundary do plates collide?
A
transform
B
divergent
C
subduction
D
convergent
15) At what type of boundary do volcanoes form?
A
subduction
B
transform
C
convergent
D
divergent
16) At what type of boundary do Earthquakes form?
A
transform
B
divergent
C
convergent
D
subduction
17) At what type of boundary do plates move away from each other?
A
convergent
B
subduction
C
transform
D
divergent
18) What causes a tsunami?
A
plate tectonics
B
volcano
C
earthquakes
D
flooding
19) The smallest unit of all living things is the:
A
cell
B
atom
C
bacteria
D
molecule
20) Autotroph means that an organism:
A
eats other organisms
B
moves
C
makes its own food
D
lives underwater
*select an answer for all questions
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