Science Review #1

What is the first step in the scientific method?

• Conduct an experiment

• Form a hypothesis

• Ask a question

• Analyze data

What is a hypothesis?

• A guess with no reason

• A testable explanation or prediction

• The result of an experiment

• A fact that never changes

Why do scientists conduct experiments?

• To prove they are right

• To test a hypothesis

• To make up new facts

• To change the results

What is the purpose of a control group in an experiment?

• To make the experiment more difficult

• To compare results against something unchanged

• To change multiple variables

• To avoid collecting data

Which of the following is an example of a variable in an experiment?

• The tools used

• The thing that is being tested or changed

• The conclusion of the experiment

• The title of the experiment

Why is it important to repeat an experiment?

• To check if the results are reliable

• To get different answers each time

• To make the experiment more fun

• To avoid writing a conclusion

What is light?

• A type of energy that travels in waves

• A solid object

• A liquid that moves through air

• A gas that fills a room

Which object would reflect the most light?

• A black T-shirt

• A wooden chair

• A mirror

• A sponge

What happens when light bounces off a smooth surface?

• Reflection

• Refraction

• Absorption

• Evaporation

What happens when light bends as it passes from one material to another?

• Reflection

• Refraction

• Absorption

• Conduction