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MOCK EXAM - E Science 7 Flashcards | StudBud
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MOCK EXAM - E Science 7
MOCK EXAM - E Science 7
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1
Who used a telescope to discover Jupiter’s moons?
Nicolas Copernicus
Galileo Galilei
Thomas Edison
Aristotle
2
How many elements are there in the modern periodic table?
100
102
118
121
3
How are the molecules in a solid arranged?
Free to move in all directions quickly
Closely packed and vibrating in place
Far apart and moving fast
Randomly spaced and bouncing
4
A scientist studies pollution and tries to protect nature. What field is this?
Food preservation
Environmental science
Genetic engineering
Electronics
5
What elements did Marie Curie discover?
Radium and Uranium
Uranium and Curium
Polonium and Radium
Polonium and Uranium
6
Which acid is found in the stomach and used for cleaning?
Citric acid
Sulfuric acid
Hydrochloric acid
Acetic acid
7
What is Einstein most famous for?
Discovering the electron
Theory of relativity
Inventing the quantum computer
Discovering radiation
8
A student uses the same seed type for all experiments. What kind of variable is this?
Independent variable
Constant variable
Controlled variable
Dependent variable
9
A scientist keeps trying after a failure. What attitude is this?
Perseverance
Curiosity
Intellectual honesty
Humility
10
What best describes a saturated solution?
It changes color when heated
It can still dissolve more solute
It has less solute than it can hold
It holds the maximum amount of solute at a given temperature
11
What should a conclusion in an experiment be based on?
What your teacher believes
The fastest result you observed
The most common opinion
Whether the results support your hypothesis
12
What tool helps you pour liquid into a narrow container without spilling?
Funnel
Tongs
Test tube holder
Erlenmeyer flask
13
What shows the difference between biological and physical science?
Biology studies living things, physical science studies non-living things
Biology studies energy, physical science studies matter
Biology looks at problems in society, physical science applies biology
Biology studies non-living things, physical science studies the universe
14
A group is building a bridge using new tools and materials. What field are they in?
Medicine
Engineering
Electronics
Computer Science
15
What is Rosalind Franklin’s major contribution?
She invented the use of X-ray crystallography
She discovered RNA's structure
She invented X-ray technology
She took the X-ray image that showed DNA’s double helix
16
What does a microscope do when looking at plant tissue?
Moves the tissue into a new container
Tells if the plant is healthy
Slices the tissue into pieces
Shows the small parts of the tissue
17
Who first explained how blood flows through the body?
Nikola Tesla
Louis Pasteur
Rosalind Franklin
William Harvey
18
Which shows the difference between science and technology?
Science studies living things, technology studies nonliving things in space
Science is about using technology to build aircraft
Science explains how diseases spread, technology makes tools to treat them
There is no real difference between science and technology
19
A student inhales fumes and feels dizzy. What kind of chemical might it be?
Flammable
Corrosive
Poisonous
Oxidizing
20
A doctor carefully studies body organs during surgery. What kind of science is this?
Botany
Zoology
Physics
Anatomy
21
What kind of mixture shows the Tyndall effect?
Suspension
Colloid
Solution
Coarse
22
What does a corrosive symbol on a chemical bottle mean?
The chemical might explode
The chemical can burn skin and eyes
The chemical is safe unless swallowed
The chemical increases fire when near flames
23
What did Copernicus discover?
The sun orbits the earth
The Earth orbits the Sun
The stars orbit the earth
The laws of motion of the planets
24
What is the main difference between a homogeneous and heterogeneous mixture?
Homogeneous mixtures look the same throughout, heterogeneous do not
Heterogeneous mixtures have only one phase
Heterogeneous mixtures are always gases
Homogeneous mixtures look different in parts
25
A student tests how sunlight affects plant growth. What is the independent variable?
Water given to each plant
Sunlight the plant receives
Height of each plant
Type of plant used
26
Which of the following shows the correct order of the scientific method?
Observe → Make a hypothesis → Test it → Analyze → Conclude
Ask a question → Guess → Experiment → Report
Test → Research → Conclude → Guess → Observe
Make a guess → Solve the problem without testing → Write a report
27
You check if a claim on social media is true by researching. What attitude is this?
Intellectual honesty
Humility
Open-mindedness
Skepticism
28
What kind of variable is water temperature in a dissolving tablet experiment?
Independent variable
Dependent variable
Controlled variable
Constant variable
29
What did Louis Pasteur discover?
The smallpox vaccine
Germ theory and pasteurization
How to remove bacteria with surgery
How to make antibiotics
30
What is a controlled variable in a sugar dissolving experiment?
Rate of sugar dissolving
Temperature of the water
Time it takes to dissolve
Amount of sugar used
31
What could happen if strong acid touches your skin?
Nothing, it only harms when swallowed or inhaled
It could burn or irritate your skin
It might cause a fire on your skin
It will just make your skin numb
32
A student counts oxygen bubbles to measure photosynthesis. What type of variable is the number of oxygen bubbles?
Constant variable
Controlled variable
Dependent variable
Independent variable
33
A scientist mixes chemicals to see their reactions. What science is this?
Botany
Genetics
Chemistry
Physics
34
A researcher tests different fertilizers effects on the number of tomatoes produced. What is the dependent variable?
The type of fertilizer used
The number of tomatoes
The plant’s height
The amount of sunlight
35
What can happen if a flammable chemical touches a sleeve wet with alcohol?
It might make the sleeve oily
It can cause serious skin damage
It can stain the clothing but is not dangerous
It may catch fire easily and spread
36
What tool heats samples without gas or electricity?
Bunsen burner
Alcohol lamp
Gas stove
Match
37
Where are most elements in the periodic table formed?
Inside Earth's oceans
In volcanoes
In the cores of stars and during supernovas
Inside the planets of the solar system
38
What element is found in both steel and human blood?
Copper
Zinc
Iron
Calcium
39
Which of these is NOT a safe lab rule?
Don’t smell or taste chemicals
Wear safety goggles and tie up long hair
Report accidents to your teacher
Leave a Bunsen burner on if it’s on low
40
What did Aristotle contribute to science?
Evolution theory
Gravity
Laws of motion
Classification of living things
