Scientific Observations and Inferences

What defines an observation in a scientific context?

• A conclusion drawn from indirect evidence.

• A prediction about future events.

• Something experienced directly using one of the five senses.

• A hypothesis that requires testing.

Which of the following is an example of a direct observation?

• The grass is green.

• It must have rained recently.

• There must be lots of bumblebees in this area.

• This ice cream was made with a lot of sugar.

What is the primary reason scientists use instruments like telescopes and X-ray machines?

• To confirm existing theories.

• To extend their senses and make observations otherwise impossible.

• To simplify complex data.

• To create new scientific theories.

What is an inference?

• A statement of fact that can be directly verified.

• A conclusion reached after making observations, based on additional information.

• A direct sensory experience.

• A universal law of nature.

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If you observe a loud roaring sound in the woods, which of the following is a plausible inference?

• The grass is green.

• The wildflowers smell sweet.

• You are close to where a waterfall is.

• This rock feels smooth.