Worksheets7th Grade Science Final Exam Review
Total questions: 38
Worksheet time: 19mins
All matter is made of
cells
atoms
electrons
compounds
Definition: Anything that takes up space and has mass must be
volume
matter
mass
density
Iron + oxygen = rust is an example of a ___________.
physical property/change
chemical property/change
mass
volume
A block of aluminum has the following dimensions:
length- 4.5 cm
height- 3.3 cm
width- 10.5 cm
Calculate the volume using the formula V=LWH to nearest tenth with proper unit.
155.9 cm3
156.0 cm3
18.3 cm3
155.9 cm
Which phase change can occur when you add enough heat energy to liquid water?
The water can change from a liquid to a solid (freezing)
The water can change from a gas to a liquid (condensation)
The water can change from a liquid to a gas (vaporization)
The water can change from a solid to a liquid (melting)
To separate the sugar and lemonade what method should you use?
filtration
sieving
magnet
evaporation/boiling
If a ball travels 475 meters in 75 seconds, what is its average speed? Speed=Distance/Time
6.3 m/s
0.2 m/s
35.6 m/s
0.6 m/s
Jupiter has about 317 times more mass than Earth. What can you infer from this fact?
That Jupiter’s gravitational force is much weaker than on Earth’s gravitational force.
That Jupiter’s gravitational force is much stronger than Earth’s gravitational force.
That Jupiter’s and Earth’s gravitational forces are equal.
Mass has no effect on the gravitational force between two objects
What was occurring from point B to point C?
A cannonball with a mass of 0.5 kg is flying at an acceleration of 10 m/sec/sec. Calculate the force using the formula f=ma.
50 Newtons
5 Newtons
20 Newtons
9.5 Newtons
Rockets are launched into space using jet propulsion where exhaust accelerates out from the rocket and the rocket accelerates in an opposite direction.
First Law of Motion (Inertia)
Second Law of Motion (F=ma)
Third Law of Motion (Action/Reaction)
A student leaves a pencil on a desk and the pencil stays in the same spot until another student picks it up.
First Law of Motion (Inertia)
Second Law of Motion (F=ma)
Third Law of Motion (Action/Reaction)
What is the main job of the digestive system?
break down foods into nutrients that can be used by the body
take in oxygen and exhale waste like caron dioxide
transport nutrients throughout the body
create energy
An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid: water, apple juice, or milk. What is the independent (manipulated) variable of the experiment?
type of soil
different liquids
plant growth
type of plant
What is the independent variable?
cost of mowing
Moe's Mowing Service
$18
Mowing Time
What system controls and coordinates ALL voluntary and involuntary life functions?
Nervous System
Skeletal System
Digestive System
Respiratory System
Jack has a rock. The rock has a mass of 14.5 g and a volume of 7.5 cm3. What is the density of the rock? (D=m/v) to the nearest tenth.
1.9 g/cm3
2 g/cm3
1.8 g/cm3
2.0 g
Two or more substances that are in the same container, but not chemically combined and can be separated by physical means is a...
compound
mixture
liquid
element
Which particle drawing represents a gas?
A glass of ice water is placed outside on a hot summer day. After a few minutes, what phase change causes the water droplets we observe on the outside of the glass?
freezing
melting
condensation
vaporization
Which of the following is an example of friction that is NOT positive/beneficial for us?
Pencil marking on paper
Engine parts wearing out
sand placed on ice in the winter
Using an eraser to erase marks
Rougher surfaces have ___________ than smooth surfaces.
more friction
less friction
the same friction
