Chapter 1: What is Science?

Question 1

Science is a way of learning about the ______.

Answer 1

world

Question 2

The ______ method is a step-by-step way scientists solve problems.

Answer 2

scientific

Question 3

A ______ is a testable prediction in science.

Answer 3

hypothesis

Question 4

Scientific explanations must be based on ______.

Answer 4

evidence

Question 5

When new evidence is found, scientific ______ can change.

Answer 5

ideas

Question 6

The idea that Earth revolves around the Sun was proposed by ______.

Answer 6

Copernicus

Question 7

A ______ is something that can be observed or measured.

Answer 7

fact

Question 8

Science focuses on questions that can be answered through ______.

Answer 8

observation and testing

Question 9

The ability to change when new evidence is found makes science ______.

Answer 9

strong

Question 10

An experiment must be ______ to confirm results.

Answer 10

repeatable

Question 11

A ______ describes what happens in nature, often with a formula.

Answer 11

scientific law

Question 12

A ______ explains why something happens in nature.

Answer 12

scientific theory

Question 13

Science differs from art and religion because it relies on ______.

Answer 13

evidence

Question 14

Scientific knowledge is ______ but open to change.

Answer 14

durable

Question 15

The bacterium that causes ulcers is called ______.

Answer 15

H. pylori

Question 16

Scientists use ______ to gather and analyze data.

Answer 16

experiments

Question 17

Being ______ means asking questions and not accepting things without proof.

Answer 17

skeptical

Question 18

Galileo used a ______ to gather evidence about the solar system.

Answer 18

telescope

Question 19

The ______ of Gravity explains how objects are pulled toward each other.

Answer 19

Law

Question 20

Ulcers were once thought to be caused by ______.

Answer 20

stress

Question 21

Science and ______ often work together to solve problems.

Answer 21

technology

Question 22

A scientific ______ is shared with others after testing.

Answer 22

conclusion

Question 23

Scientific knowledge is built through ______ and testing.

Answer 23

observation

Question 24

A scientific explanation must be based on ______.

Answer 24

evidence

Question 25

Scientific thinking involves careful ______ and analysis.

Answer 25

observation

Question 26

What is science primarily based on? A. Opinions B. Imagination C. Evidence D. Tradition

Answer 26

C. Evidence — Science is based on careful observations and data, not personal beliefs or traditions.

Question 27

Which of the following is a testable prediction? A. Fact B. Hypothesis C. Law D. Belief

Answer 27

B. Hypothesis — A hypothesis is a testable statement scientists use in experiments.

Question 28

What tool did Galileo use to support the heliocentric model? A. Microscope B. Calculator C. Telescope D. Computer

Answer 28

C. Telescope — Galileo used a telescope to observe moons and stars and support heliocentrism.

Question 29

Which of these is an example of a scientific law? A. Theory of Evolution B. Newton’s Law of Gravity C. Copernicus’s Idea D. Big Bang Theory

Answer 29

B. Newton’s Law of Gravity — Scientific laws describe what happens using formulas or consistent patterns.

Question 30

What happens when new scientific evidence is discovered? A. It is ignored B. Theories may change C. Laws become invalid D. Opinions are favored

Answer 30

B. Theories may change — New evidence can update or replace older scientific theories.

Question 31

What makes science different from other subjects like art? A. It relies on belief B. It uses opinions C. It is based on evidence and testing D. It cannot be tested

Answer 31

C. It is based on evidence and testing — Science relies on the scientific method, unlike art or belief systems.

Question 32

Why do scientists repeat experiments? A. To make them longer B. To improve the tools C. To confirm the results D. To get money

Answer 32

C. To confirm the results — Repeating experiments helps verify accuracy and reliability.

Question 33

Which term best describes a well-tested idea supported by evidence? A. Hypothesis B. Law C. Theory D. Guess

Answer 33

C. Theory — A scientific theory explains why something happens and is based on evidence.

Question 34

Which of the following causes ulcers, according to modern science? A. Stress B. Spicy food C. H. pylori bacteria D. Lack of sleep

Answer 34

C. H. pylori bacteria — This bacteria was proven to be the real cause of most stomach ulcers.

Question 35

Why is skepticism important in science? A. It prevents learning B. It avoids experiments C. It encourages careful testing D. It discourages change

Answer 35

C. It encourages careful testing — Skepticism ensures that conclusions are based on strong evidence.

Question 36

What is the first step in the scientific method? A. Draw a conclusion B. Ask a question C. Do an experiment D. Analyze data

Answer 36

B. Ask a question — The scientific method starts with curiosity about the world.

Question 37

Scientific knowledge is: A. Never changing B. Always wrong C. Durable but open to change D. Based on tradition

Answer 37

C. Durable but open to change — Scientific ideas last, but can change when new evidence appears.

Question 38

A scientific experiment must be: A. Expensive B. Random C. Repeatable D. Opinion-based

Answer 38

C. Repeatable — Experiments must be done more than once to confirm results.

Question 39

Science helps us understand the world through: A. Belief B. Testing and observation C. Voting D. Guesswork

Answer 39

B. Testing and observation — Science relies on data and real-world evidence.

Question 40

What does a scientific conclusion rely on? A. Popularity B. Evidence C. Creativity D. Art

Answer 40

B. Evidence — Conclusions must be supported by the facts discovered through experiments.

Question 41

Which of the following is a scientific theory? A. Law of Gravity B. Plate Tectonics C. Boiling point of water D. Photosynthesis

Answer 41

B. Plate Tectonics — A theory explains why continents move, based on evidence.

Question 42

Who discovered that ulcers are caused by bacteria? A. Galileo B. Copernicus C. Marshall and Warren D. Newton

Answer 42

C. Marshall and Warren — They proved bacteria cause ulcers, not stress or food.

Question 43

Science and technology: A. Are unrelated B. Never change C. Help each other D. Compete for resources

Answer 43

C. Help each other — Science discovers how things work, and technology applies that knowledge.

Question 44

Why do scientific ideas sometimes change? A. New leaders are elected B. New evidence is found C. People get bored D. Schools demand it

Answer 44

B. New evidence is found — Discoveries lead to new or improved scientific explanations.

Question 45

What do scientists use to gather information? A. Dreams B. Guesswork C. Experiments and data D. Rumors

Answer 45

C. Experiments and data — These are tools used to gather scientific evidence.

Question 46

The idea that Earth is the center of the universe was replaced because: A. It was unpopular B. It wasn’t scientific C. New evidence was found D. People were bored

Answer 46

C. New evidence was found — Better tools and observations changed our understanding of the universe.

Question 47

What is a scientific hypothesis? A. A final result B. A guess with no evidence C. A testable idea D. A superstition

Answer 47

C. A testable idea — Hypotheses are ideas you can test through investigation.

Question 48

Which of the following is NOT a scientific method step? A. Share results B. Form a hypothesis C. Draw a conclusion D. Make a law

Answer 48

D. Make a law — Laws are discovered, not created by scientists during experiments.

Question 49

Which example shows science changing over time? A. The calendar year B. Learning Earth orbits the Sun C. Building houses D. Writing poems

Answer 49

B. Learning Earth orbits the Sun — New discoveries replaced older, incorrect models.

Question 50

Being skeptical means: A. Refusing to listen B. Believing everything C. Asking questions and needing proof D. Avoiding facts

Answer 50

C. Asking questions and needing proof — Skepticism helps keep science careful and evidence-based.