WorksheetsREVIEW CA 2.6
Total questions: 70
Worksheet time: 35mins
Name
Class
Date
1.
Which is a pure substance?
a)
Iron
b)
Air
c)
Salt water
d)
Salad
2.
Which is a compound?
a)
Carbon dioxide
b)
Oxygen
c)
Helium
d)
Gold
3.
Which is a heterogeneous mixture?
a)
Salad
b)
Sweet tea
c)
Salt water
d)
Air
4.
Which is a homogeneous mixture?
a)
Salt water
b)
Oil and water
c)
Cereal
d)
Trail mix
5.
Elements contain how many types of atoms?
a)
One
b)
Two
c)
Three
d)
Four
6.
Compounds form from what?
a)
Combined elements
b)
Mixed parts
c)
Separate layers
d)
Random solids
7.
Air is best classified as what?
a)
Homogeneous mixture
b)
Element
c)
Compound
d)
Heterogeneous mixture
8.
Sand and iron filings form what?
a)
Heterogeneous mixture
b)
Compound
c)
Element
d)
Homogeneous mixture
9.
Water is classified as what?
a)
Compound
b)
Element
c)
Mixture
d)
Solution
10.
Which contains bonded atoms?
a)
Compound
b)
Mixture
c)
Salad
d)
Sand
11.
In reactions, mass is what?
a)
flushed
b)
Conserved
c)
Lost
d)
Gained
12.
Atoms in reactions are what?
a)
Rearranged
b)
Made
c)
Destroyed
d)
Copied
13.
Photosynthesis converts CO₂ and water into what?
a)
Sugar
b)
Sand
c)
Iron
d)
Salt
14.
Conservation of mass means total mass stays what?
a)
Same
b)
Larger
c)
Smaller
d)
Variable
15.
Chemical equations show what?
a)
Atoms
b)
Layers
c)
Clouds
d)
Waves
16.
Reactants change into what?
a)
Products
b)
Rocks
c)
Metals
d)
Air
17.
During reactions, atoms do what?
a)
fart
b)
Rearrange
c)
Vanish
d)
Multiply
18.
Photosynthesis mainly needs what?
a)
Light
b)
Ice
c)
Steel
d)
Dust
19.
Mass of reactants equals mass of what?
a)
Products
b)
Clouds
c)
Winds
d)
Layers
20.
Conservation of mass applies to which changes?
a)
Chemical
b)
Random
c)
Imaginary
d)
Weather
21.
Acceleration increases when force does what?
a)
Increases
b)
Drops
c)
Stops
d)
Balances
22.
F = m × what?
a)
Acceleration
b)
Speed
c)
Time
d)
Density
23.
Acceleration decreases when mass does what?
a)
Rises
b)
Shrinks
c)
Splits
d)
Melts
24.
Net force causes what?
a)
Acceleration
b)
Heat
c)
Motion
d)
Shadows
25.
More mass requires more what?
a)
Force
b)
Color
c)
Light
d)
Shape
26.
Newton’s second law explains what?
a)
Acceleration
b)
Light
c)
Gravity
d)
Sound
27.
Zero net force means what acceleration?
a)
None
b)
Large
c)
Random
d)
Heavy
28.
Net force equals mass times what?
a)
Acceleration
b)
Area
c)
Light
d)
Shape
29.
Greater force makes acceleration what?
a)
Greater
b)
Smaller
c)
Zero
d)
Random
30.
Smaller mass makes acceleration what?
a)
Larger
b)
Zero
c)
Tiny
d)
Random
31.
A seatbelt demonstrates which law?
a)
First
b)
Second
c)
Third
d)
Fourth
32.
Action–reaction describes which law?
a)
Third
b)
First
c)
Second
d)
Fourth
33.
Inertia is resistance to what?
a)
Motion change
b)
Heat
c)
Light
d)
Sound
34.
Rockets lift using what?
a)
Reaction force
b)
Silence
c)
Gravity
d)
Friction
35.
Sports kicks show which law?
a)
First
b)
Second
c)
Third
d)
1st, 2nd, 3rd
36.
Unbalanced forces cause what?
a)
Acceleration
b)
Stillness
c)
Darkness
d)
Growth
37.
Roller coasters show which laws?
a)
All three
b)
None
c)
First only
d)
Third only
38.
Tectonic plates resist change due to what?
a)
Inertia
b)
Color
c)
Heat
d)
Waves
39.
Crash restraints reduce what?
a)
Force
b)
Music
c)
Weather
d)
Mass
40.
Pushing a wall shows what?
a)
Third law
b)
No reaction
c)
Fourth law
d)
Zero law
41.
Amplitude measures what?
a)
Height
b)
Speed
c)
Color
d)
Mass
42.
Frequency measures what?
a)
Wave cycles
b)
Brightness
c)
Height
d)
Mass
43.
Wavelength measures what?
a)
Length
b)
Width
c)
Height
d)
Speed
44.
High frequency means wavelength is what?
a)
Shorter
b)
Longer
c)
Same
d)
None
45.
Low amplitude means energy is what?
a)
Low
b)
High
c)
Random
d)
Huge
46.
Electromagnetic waves need what medium?
a)
None
b)
Water
c)
Air
d)
Metal
47.
Light is which wave type?
a)
Transverse
b)
Sound
c)
Longitudinal
d)
Water
48.
Higher amplitude means what energy?
a)
More
b)
Less
c)
Zero
d)
None
49.
Radio waves have what frequency?
a)
Low
b)
High
c)
Medium
d)
Variable
50.
Gamma rays have what wavelength?
a)
Short
b)
Long
c)
Medium
d)
Huge
51.
Stars begin as what?
a)
Nebula
b)
Planet
c)
Comet
d)
Moon
52.
The Sun is what class?
a)
Main sequence
b)
Blue giant
c)
White dwarf
d)
Red giant
53.
Massive stars end as what?
a)
Supernova
b)
Nebula
c)
Planet
d)
Meteor
54.
Small stars end as what?
a)
White dwarf
b)
Black hole
c)
Nebula
d)
Giant
55.
H-R diagram compares brightness and what?
a)
Temperature
b)
Color
c)
Size
d)
Age
56.
Hot stars appear what color?
a)
Blue
b)
Red
c)
Orange
d)
Yellow
57.
Cool stars appear what color?
a)
Red
b)
Blue
c)
White
d)
Green
58.
Giants are what size?
a)
Large
b)
Tiny
c)
Medium
d)
Microscopic
59.
Main sequence stars fuse what?
a)
Hydrogen
b)
Iron
c)
Carbon
d)
Ice
60.
White dwarfs are what size?
a)
Small
b)
Huge
c)
Medium
d)
Enormous
61.
What type is the Milky Way?
a)
Spiral
b)
Elliptical
c)
Irregular
d)
Ring
62.
Earth is located where?
a)
Spiral arm
b)
Center
c)
Core
d)
Outside
63.
Elliptical galaxies look what?
a)
Round
b)
Flat
c)
Twisted
d)
Irregular
64.
Irregular galaxies appear what?
a)
No shape
b)
Even
c)
Neat
d)
Round
65.
Spiral galaxies have what?
a)
Arms
b)
Holes
c)
Cracks
d)
Rings
66.
The Sun orbits what?
a)
Center
b)
Moon
c)
Earth
d)
Stars
67.
Galaxies contain what?
a)
Stars
b)
Clouds
c)
Waves
d)
Sand
68.
Milky Way shape resembles what?
a)
Spiral
b)
Sphere
c)
Square
d)
Line
69.
Irregular galaxies lack what?
a)
Order
b)
Light
c)
Gas
d)
Stars
70.
Andromeda is which type?
a)
Spiral
b)
Elliptical
c)
Irregular
d)
Ring
100 %
