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Science Questions You Should Know
Everyone should have a grasp on the basic processes that make our world tick. Take this quiz to see how good you are at answering some basic science questions.
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Last updated: May 18, 2019
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| First submitted | May 18, 2019 |
| Times taken | 271 |
| Average score | 69.0% | Report this quiz | Report |
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1. Which direction does the needle of a compass point?
The point is drawn toward the magnetic North Pole.
West
North
South
2. What is every object in our world made of?
Atoms and molecules are made of matter.
Solids
Mass
Matter
3. Newton's first law of motion states that an object in motion tends to what?
Objects in motions stay in motion, and objects at rest tend to stay at rest.
Cause an equal or opposite reaction
Slowly decrease in speed
Stay in motion
4. About what percentage of Earth is covered by water?
Seventy percent of Earth is covered by water, and most of that is ocean.
50%
25&
70%
5. The word habitat refers to what?
A habitat is a place where an organism lives. Loss of habitat is a reason that many species disappear.
A place where an organism lives
A subset of a specific ecosystem
A large, open area
6. How many days does it take Earth to travel around the sun?
This 365-day cycle is the basis for our calendar system.
365 days
30 days
100 days
7. When do the coldest temperatures generally occur?
They occur just after sunrise. It takes a while for the sun to begin warming things up again.
At 2 a.m.
Just before sunrise
Shortly after sunrise
8. How many subatomic particles are in an atom?
The three main subatomic particles in atoms are electrons, protons and neutrons.
3
2
5
9. About how long ago did modern humans first appear?
Modern humans appeared about 200,000 years ago, and dinosaurs went extinct about 65 million years ago, so of course our ancesters never saw a T-Rex.d the
15 million years ago
200,000 years ago
2 million years ago
10. What does the periodic table display?
Elements with similar properties are in the same column.
The evolutionary time periods of life on Earth
The geologic layers that represent different eras of Earth's creation
Elements according to their atomic numbers
11. What term describes a group of organisms and their physical environment?
Earth is home to many diverse ecosystems.
Niche
Ecosystem
Mutualism
12. If the pressure is the same, what kind of air has the greatest density?
Cold air is denser because the molecules move slowly.
Cold
Humid
Hot
13. What are the abiotic factors of an environment?
Soil and rain are examples of the nonliving parts of an environment.
The nonliving parts of an environment
The disappearing parts of an environment
The asymmetrical parts of an environment
14. How are synthetic chemicals different from so-called natural chemicals?
The atoms are the same whether they are naturally-occurring or made by humans.
Natural chemicals are healthier.
They aren't different.
Synthetic chemicals tend to be more toxic.
15. Newton's third law of motion states that every action has what?
The law that every action has an equal and opposite reaction affects all of us, every moment of every day.
A consequence
An equal and opposite reaction
Both motion and rest
16. How old are the oldest fossils found on Earth?
They're about 3.8 billion years old, nearly as old as the solar system.
About 137 million years
About 82 million years
About 3.8 billion years
17. What does the nucleus of a cell contain?
DNA provides basic instructions for building and maintaining an organism.
Organelles
DNA
Lysosomes
18. According to cell theory, what are cells?
Every organism is made from cells, the basic units of life.
The building blocks of dark matter
The same for all mammals
The basic unit of life
19. What is the first step of the scientific method?
You must identify a problem before having an hypothesis.
Test your hypothesis
Identify the problem
State your hypothesis
20. What is all matter made of?
You can't have matter of any kind without chemicals.
Chemicals
Solutions
Minerals
21. In weather, what does the term "front" refer to?
A front, the place where two air masses meet, often brings drastic changes in weather.
A mass of hot, humid air
The opposite of "back"
The place where two air masses meet
22. What is the hottest part of our planet?
Decaying radioactive elements, heat from friction and other factors make the core very hot.
Mantle
Crust
Core
23. What type of galaxy is the Milky Way?
Earth resides in one of the outer arms of the Milky Way, a spiral galaxy.
Elliptical
Irregular
Spiral
24. Which characteristic do all mammals have?
Mammals are a furry bunch — some more than others.
Simple teeth
Large brains
Hair
25. What makes something a poison?
Every chemical can be poisonous to humans if they're exposed to a high enough dose.
Its toxicity
Its dose
Its presence in snakes
26. What mineral is found in a saline solution?
Saline solutions include salt and are great for rinsing your nasal passages.
Potassium
Sodium
Calcium
27. What do mitochondria provide for an organism's body?
They use oxygen and sugars to provide energy.
Energy
Protein
Sugars
28. What happens to iron when it is exposed to oxygen?
Iron readily combines with oxygen to create iron oxide, or rust.
It begins to bubble.
It converts slowly to magnesium.
Rusts
29. What is the basic unit of a chemical element?
An atom is the smallest component of an element that still retains the properties of that element.
Atom
Mass
Molecule
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