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6th-8th Grade Science Review Flashcards | StudBud
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6th-8th Grade Science Review
6th-8th Grade Science Review
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A Review on the 2nd Semester of 8th Grade Science
Flashcards
30 cards
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Practice quiz
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Questions
30
Answers
1
What is the Atmosphere mainly made out of?
Nitrogen
Hydrogen
Carbon Dioxide
Oxygen
2
What is the mixture where the substances are unevenly mixed?
Homogenous Mixture
Heterogenous Mixture
3
What is the energy of motion?
Potential
Kinetic
4
What does the Respiratory System do?
Breakdown food
Carry waste
Remove Carbon Dioxide
Store food
5
What is the energy stored in the object?
Potential
Kinetic
6
What is the Earth made up of?
Core
All of the Above
Mantle
Crust
7
What is the 1st Law of Motion?
Matter can neither be created or destroyed
Equal but opposite reaction
Law of Inertia
Force = Mass * Acceleration
8
What does erosion create?
Canyons
Valleys
Arches
All of the Above
9
What do waves carry?
Mass
Matter
Electriciy
Energy
10
What does DNA do?
Will mask stronger copies of genes
Controls characteristics of an organism
Makes copies of genes
Will mask weaker copies of genes
11
How many galaxies are in the universe?
3 billion
300 billion
30 million
7 million
12
What is the inner core of the Earth made of?
Rock
Solid Metal
Lava
Liquid Metal
13
What causes Erosion?
Wind
Gravity
Water
All of the Above
14
What is the Asthenosphere?
Lava Layer
Rock Layer
Solid Layer
Flowing Layer
15
What is Kinetic Energy?
The matter in space
The energy in motion
The energy in the nucleus
Energy stored in an object
16
Is the Sun a star?
Yes
No
17
What molecule allows hereditary information to be passed from generation to generation?
ATP
Proteins
DNA
Lipids
18
What is another name for the Mitochondria?
Machine
Protector
Brain of Cell
Powerhouse
19
What is one of the two types of energy?
Electric
Mass
Kinetic
Potential
20
What is the dominant gene?
Weaker copy of gene
Stronger copy of gene
21
What does the Digestive System do?
Remove Carbon Dioxide
Breakdown food
Store Food
Carry waste
22
What is the outer core of the Earth made of?
Lava
Liquid Metal
Solid Metal
Rock
23
If a horse is walking at 2 m/s. How far will the horse travel in 30 minutes?
15 m
60 m
1800 m
3600 m
24
What is a Nucleus?
Makes energy
Holds DNA used to control
Holds matter
Outside of Cell
25
Does Bacteria have a nucleus?
Yes
No
26
What does the Atomic Number represent in an atom?
Neutrons
Protons
Nucleus
Electrons
27
What is the Cell Theory?
Cells can't be created or destroyes
All living things are made of cells
Cells can be created and destroyes
None of the Above
28
What is the recessive gene?
Weaker copy of gene
Stronger copy of gene
29
What causes weathering?
WInd
Water
Gravity
All of the Above
30
What causes Erosion?
All of the Above
Gravity
Water
Wind
