Worksheets8th Grade Semester 1 Final Review #3
Total questions: 40
Worksheet time: 36mins
Name
Class
Date
1.
Which organelle belongs in plant cells only?
a)
Cytoplasm
b)
Mitochondrion
c)
Large Central Vacuole
d)
Cell Membrane
2.
Which organelle belongs in both plant and animal cells?
a)
Cytoplasm
b)
Chloroplast
c)
Large Central Vacuole
d)
Cell Wall
3.
Which organelle belongs in both plant and animal cells?
a)
Chloroplast
b)
Mitochondrion
c)
Large Central Vacuole
d)
Cell Wall
4.
If there are two forces going in the same direction how would you find the net force?
a)
Subtract
b)
Add
c)
Neither
d)
Multiply
5.
Find the net force: 15 N to the right, and another 15 newtons to the right.
a)
0 N Right
b)
0 N Left
c)
30 N Left
d)
30 N Right
6.
8 N to the left , and 4 N to the right. Find the net force. Is this balanced
a)
12 N Right No
b)
4 N Left No
c)
12 N Right Yes
d)
4 N Left Yes
7.
What is force?
a)
A push exerted on an object
b)
A push or pull exerted on an object
c)
A pull exerted on an object
d)
Nothing
8.
Forces that have a net force of zero ( the object is still).
a)
Balanced force
b)
Unbalanced force
9.
The force that pulls things toward earth.
a)
Speed
b)
Gravity
10.
__________ is the sum of all forces acting on an object. It is capable of accelerating a mass.
a)
velocity
b)
gravity
c)
net force
d)
distance
11.
Jaylin draws the orbit of Earth around the Sun. What changes in climate will Earth experience based upon Jaylin's drawing?
a)
The seasons will only occur in regions around the equator.
b)
The seasons will only occur in regions around the poles.
c)
There will only be summer and winter on Earth.
d)
There would be no seasons on Earth.
12.
The image shows Earth tilted on its axis and the rays from the Sun falling on it at a particular time of the year. How do the lengths of days in both hemispheres compare on this day?
a)
The length of days and nights will be equal in both hemispheres because the Sun is directly overhead at the equator.
b)
The length of days and nights will be equal in both hemispheres because the Sun is directly overhead at the North Pole.
c)
The days will be longer in the Northern Hemisphere than in the Southern Hemisphere because the Sun is directly above the Tropic of Cancer.
d)
The days will be longer in the Southern Hemisphere than in the Northern Hemisphere because the Sun is directly above the Tropic of Capricor
13.
The area around the earth where its magnetic field exists
a)
Magnetosphere
b)
Solar Wind
c)
Aurora
d)
Gravitational Field
14.
A glowing region in the atmosphere caused by charged particles from the sun
a)
Aurora
b)
Sun spots
c)
Magnetic Field
d)
Horizon
15.
The solar wind follows earths ______________ to the poles
a)
Magnetic Field
b)
Gravitational Field
c)
Horizons
d)
Auroras
16.
The light from an aurora is produced by _____________ in the atmosphere absorbing energy from the solar wind and then giving it off in the form of light
a)
Atoms
b)
Magnetic fields
c)
Compasses
d)
Birds
17.
What subject is attracted to a magnet?
a)
Silver
b)
Water
c)
Metal
d)
Iron
18.
What happens when two north poles of a magnet are placed together?
a)
they repel
b)
they attract
c)
they cancel each other out
d)
the strength of the magnet is doubled
19.
When two magnets attract, they ______________
a)
push apart
b)
change color
c)
get colder
d)
pull together
20.
When two magnets repel, they ________________
a)
change color
b)
pull together
c)
push apart
d)
get colder
21.
What is this?
a)
magnet
b)
electromagnet
c)
series circuit
d)
parallel circuit
22.
How do you make an electromagnet stronger?
a)
Add a motor and/or lightbulbs
b)
Add more light bulbs and/or wire coils
c)
add more wire coils and/or a switch
d)
add more wire coils and/or batteries
23.
The smallest level of organization of life in an organism
a)
tissue
b)
cell
c)
organ
d)
organ system
24.
The cell is the building block of all living things.
a)
True
b)
False
25.
Earth and the other planets closest to the Sun are made mostly of _______
a)
gas
b)
metal
c)
water
d)
rock
26.
Day and night is caused by the _____________ of earth on its axis.
a)
revolution
b)
orbit
c)
rotation
27.
True or False
The Earth is the center of the solar system.
The Earth is the center of the solar system.
a)
True
b)
False
28.
Which type of eclipse occurs when the Moon comes directly between Earth and the Sun?
a)
Lunar eclipse
b)
Solar eclipse
29.
For a solar eclipse to occur, what has to happen?
a)
The sun must be directly between Earth and the moon.
b)
The moon must be directly between Earth and the Sun.
30.
During a solar eclipse...
a)
The sun is blocked
b)
The Earth is blocked
31.
A solar eclipse only occurs during which moon phase?
a)
1st Quarter
b)
New Moon
c)
Full Moon
d)
3rd Quarter
32.
In order to have an eclipse, the Moon, Sun and Earth have to be?
a)
Below each other
b)
Above each other
c)
In alignment
33.
a)
solar eclipse
b)
lunar eclipse
34.
What are the reasons for the season?
a)
Earth's tilt & rotation
b)
Earth's tilt & revolution
c)
Earth's rotation & rovolution
d)
Earth's tilt & resolution
35.
The hemisphere where you live
a)
equator
b)
southern
c)
northern
d)
eastern
36.
What causes there to be longer number of hours of light during the summer
a)
Earth tilt's away from the sun in summer
b)
Earth's revolves slower in summer
c)
Earth tilts toward the sun in summer
d)
Earth is closer to the sun
37.
In winter, the axis of the earth is pointed away or toward the sun?
a)
towards
b)
up
c)
down
d)
away
38.
In summer, the axis of the earth is pointed away or toward the sun?
a)
towards
b)
up
c)
down
d)
away
39.
Why is the Equator warmest?
a)
Because it is closest to the sun.
b)
Because it receives the most direct sunlight
c)
Because no clouds form here.
d)
Because it is far from the sun
40.
What causes more heat, indirect sunlight or direct sunlight?
a)
indirect
b)
direct
100 %
