NEW
Font size
S
M
L
XL
WorksheetsHypothesis Theory Law
Total questions: 24
Worksheet time: 12mins
Name
Class
Date
1.
People have 206 bones.
The tiniest bone is inside the ear. It is 3 millimeters long. It is called the stapes, or stirrup.
The tiniest bone is inside the ear. It is 3 millimeters long. It is called the stapes, or stirrup.
a)
Fact
b)
Theory
c)
Law
2.
The EARTH is made of the following CHEMICAL ELEMENTS:
oxygen 46.6 %
aluminum 8.1 %
iron 5%
sodium 2.8 %
oxygen 46.6 %
aluminum 8.1 %
iron 5%
sodium 2.8 %
a)
Fact
b)
Theory
c)
Law
3.
Evolution is the widely held notion that all life is related and has descended from a common ancestor: the birds and the bananas, the fishes and the flowers
-- all related That is, complex creatures evolve from more simplistic ancestors naturally over time.
-- all related That is, complex creatures evolve from more simplistic ancestors naturally over time.
a)
Fact
b)
Theory
c)
Law
4.
New cells are formed from other existing cells, and that the cell is a fundamental unit of structure, function and organization in all living organisms.
a)
Fact
b)
Theory
c)
Law
5.
The Sun, composed mostly of helium and hydrogen, has a surface temperature of 6000 degrees Celsius.
a)
Fact
b)
Theory
c)
Law
6.
An observation that has been repeatedly confirmed, and for all practical purposes is accepted as “true.”
a)
Fact
b)
Theory
c)
Law
d)
Hypothesis
7.
A testable statement about the natural world that can be used to build more complex inferences and explanations. To be a hypothesis, a statement must contain a possible explanation.
a)
Fact
b)
Theory
c)
Law
d)
Hypothesis
8.
In science, a well-substantiated explanation of some aspect of the natural world that can incorporate facts, laws, inferences, and tested hypotheses.
a)
Fact
b)
Theory
c)
Law
d)
Hypothesis
9.
Once a theory has been tested and confirmed it cannot be changed.
a)
True
b)
False
10.
You observe that, upon waking up each morning, your trashcan is overturned and trash is spread around the yard. You propose that raccoons are responsible. Is this fact, a law, a theory, or a hypothesis?
a)
Fact
b)
Law
c)
Theory
d)
Hypothesis
11.
The universe is becoming increasingly less dense and started at some point in time with a big bang. What is this?
a)
Fact
b)
Law
c)
Theory
d)
Hypothesis
12.
Laws tells us that it happens but doesn’t describe how or why.
a)
True
b)
False
13.
Einstein’s famous equation E=mc^2 describes the action of energy being converted to mass. What is this?
a)
Fact
b)
Theory
c)
Law
d)
Hypothesis
14.
A law is better than a theory.
a)
True
b)
False
15.
Scientific theories are based on
a)
general assumptions of how systems work.
b)
mathematical principles that can be proven true.
c)
large amounts of data collected over time.
d)
observations from within only one scientific discipline.
16.
Kalinda was trying to explain to her friend the difference between a theory and a law in science. She used the theory of plate tectonics and the law of superposition as examples. Kalinda explained the difference by using nonscientific language. Which statement did Kalinda use to correctly describe the difference between a theory and a law in science?
a)
A theory describes a natural event, while a law explains it.
b)
A theory explains a natural event, while a law predicts it.
c)
A theory explains a natural event, while a law describes it.
d)
A theory predicts a natural event, while a law explains it.
17.
Laws are usually mathematically defined.
a)
True
b)
False
18.
A possible explanation to a problem that has not yet been tested.
a)
data
b)
theory
c)
hypothesis
d)
fact
19.
Scientists all over the world are sure that all matter is made of atoms. All of their investigations point to the fact that this is true. Unfortunately, there is no way to know 100% for sure if atoms are real. This means that the idea of atoms is a _________.
a)
question
b)
hypothesis
c)
theory
d)
law
20.
Joe tells Mai his theory about why sea turtles nest on the beach instead of in the ocean. He says, “The turtle eggs would sink to the bottom of the ocean, and the baby turtle would drown.” Joe says his uncle, a fisherman, told Joe this information. Mai tells Joe that his theory is not scientific. Why does Joe’s idea not meet the requirements to be a scientific theory?
a)
Joe’s idea is already a scientific law.
b)
Joe’s idea is not supported by scientific evidence.
c)
Joe’s idea is a good guess that can be tested by experiments.
d)
Joe and his uncle are not scientists.
21.
The law of universal gravitation states that both mass and distance of objects affect the gravitational force between them. Gravitational force increases as the mass of the objects increase. Gravitational force decreases as distance between the objects increases. Why are these statements considered scientific law, and not scientific theory?
a)
The statements tells what happens, and not why the even occurs.
b)
This statement involves mass and distance measurements.
c)
This statement explains the attractive force between two objects.
d)
This statement predicts what will happen under certain conditions.
22.
The atomic theory has been modified many times to explain new experimental data. However, the data have never led to atomic theory being discarded. Why are theories sometimes modified but rarely discarded?
a)
Scientists find it easier to modify a theory rather than reject it.
b)
Discarding the theory would mean that all the data used to form the theory were false.
c)
Once a theory has been formed, scientists no longer carry out investigations to test the validity of the theory.
d)
Before scientists form a theory, they have repeatedly verified the hypotheses leading to the theory by carrying out experiments.
23.
In 1897, Joseph Thomson discovered that atoms contained electrons. He proposed a change in the atomic theory of that time, and the theory was modified because of his discovery. Since Thomson’s discovery, atomic theory has been further modified. What is the best explanation for why scientific theories are modified?
a)
Theories more than ten years old are usually out of date.
b)
Scientists want to prove that the work of other scientists is wrong.
c)
New evidence that supports a revision prompts scientists to modify earlier theories.
d)
So much information is available today that it is harder to focus research and disprove theories.
24.
Sedimentary rocks are formed particle by particle. Over time, layers of particles are piled one on top of the other. Therefore, in any sequence of layered rocks, a given layer must be older than any layer on top of it. This is known as the law of superposition. This law is fundamental to the interpretation of Earth’s history because it indicates the relative ages of rock layers and the fossils in them. What evidence would support the law of superposition?
a)
An earthquake occurs so that the rock layers are disturbed.
b)
Sedimentary rock gradually turns into another type of rock.
c)
Fossils in higher layers are not as advanced and complex as the fossils in lower layers of sedimentary rock.
d)
Radiometric dating shows that fossils in lower layers are older than fossils in higher layers of sedimentary rock.
Reset
