Investigations in Science

Question 1

What is a hypothesis

Answer 1

the possible explanation of an observation.

Question 2

Steps of a scientific method (7)

Answer 2

1.make an observation
2.form a hypothesis
3.experiment
4.collect+internet data
5.form a conclusion
6. Compare the conclusion with existing knowledge
7. Report and publish the results

Question 3

What are the three types of variables

Answer 3

Dependent
Independent
Controlled

Question 4

What is independent variable

Answer 4

the variable that is deliberately changed by the researcher

Question 5

What is the dependent variable

Answer 5

the variable that is measured to see how it changes when the independent variable is manipulated.

Question 6

What is a controlled variable

Answer 6

factor that is kept constant throughout an experiment

Question 7

3 safety precautions in a science lab

Answer 7

Wear safety gear: Use goggles, gloves, and lab coats.
Follow instructions: Read and follow your teacher’s directions
Handle chemicals carefully: Treat all chemicals with care

Question 8

What are safety symbols in the lab

Answer 8

Safety symbols are important signs used in the lab to communicate potential hazards.