FCPS Biology Unit 1 Test

Which of the following correctly defines a scientific law?

• A concise statement which is true under all conditions.

• An in-depth explanation of how or why something occurs.

• A suggestion which is compatible with current research.

• A widely accepted statement which is true under specific conditions.

Tags

NGSS.HS-PS2-1

Which of the following is used to decide to select a hypothesis?

• a) Observation and experimentation

• b) Background research

• c) Peer review

• d) Repeat trials

Tags

NGSS.HS-PS1-2

Which of the following statements is true regarding hydrogen bonds?

• a) A hydrogen bond is stronger than an ionic bond.

• A hydrogen bond has the same strength as a covalent bond.

• The attraction between the hydrogen atom of one water molecule and the oxygen atom of another water molecule is an example of a hydrogen bond.

• d) All of the above.

Which of the following is not a characteristic of a good hypothesis?

• a) It is testable

• b) It is based on existing knowledge

• c) It is a proven fact

• d) It can be used to make predictions

Tags

NGSS.HS-PS1-2

Which of the following is not a type of chemical bond?

• a) Covalent bond

• b) Ionic bond

• c) Metallic bond

• d) Quantum bond

Which of the following best describes a scientific theory?

• a) A guess or assumption about a particular phenomenon

• b) A proven fact that explains all aspects of a phenomenon

• c) A well-substantiated explanation of some aspect of the natural world

• d) A law that governs how nature operates