STEM Engr HN U1_3

What is a hypothesis?

• A final proven fact

• An initial idea that needs investigating

• A mathematical equation

• A scientific law

What did Newton hypothesize about falling objects and the orbits of planets?

• They are unrelated phenomena

• They are aspects of the same physical force

• They are caused by different forces

• They are both due to air resistance

What is the relationship between the force of gravity and the distance between two masses?

• Directly proportional to the distance

• Inversely proportional to the distance

• Directly proportional to the square of the distance

• Inversely proportional to the square of the distance

What is the relationship between the force of gravity and the masses of two objects?

• Directly proportional to the product of their masses

• Inversely proportional to the product of their masses

• Directly proportional to the sum of their masses

• Inversely proportional to the sum of their masses

What is one of the most useful properties of scientific theories?

• They can be used to make predictions about natural events or phenomena

• They can become scientific laws

• They are always correct

• They are based on opinions

What is the role of observation or experiment in a scientific theory?

• To disprove the theory

• To confirm the theory

• To create a hypothesis

• To replace the theory

What is the main difference between a scientific theory and an everyday theory?

• Scientific theories are guesses

• Everyday theories are based on experiments

• Scientific theories are confirmed by observation or experiment

• Everyday theories are always correct

What is true about scientific facts?

• They depend on the observer.

• They are subjective.

• They are independent of the observer.

• They are always theoretical.

What is an example of a scientific fact?

• The Moon orbits the Earth.

• The Earth is flat.

• The Sun revolves around the Earth.

• The speed of sound is faster than the speed of light.

Which of the following is NOT a characteristic of a scientific fact?

• It is an observation.

• It is a measurement.

• It is a type of evidence.

• It is a hypothesis.