F1 IS Chapter 1

Scientists invented the properties of light. This invention was used for the discovery of mirrors.

• True

• False

Science cannot solve poverty. This is an example of the misuse of science.

• True

• False

We have two brands of tissue paper. We can do a fair test to find out which brand is stronger.

• True

• False

Which combination about branches of science is incorrect?

• A

• B

• C

• D

Which statement is incorrect?

• Making observations is often the first step in scientific investigations.

• Scientists still cannot explain why the universe exists.

• Scientists are curious about the things that happen around them.

• All scientific discoveries are good; scientific inventions can be harmful.

Which of the following is not an example of observation?

• Eggs are rich in proteins and are good to health.

• An egg sinks in tap water.

• An egg consists of three main parts: eggshell, egg white and yolk.

• Eggshells are brown in colour.

What hypothesis does this set-up investigate?

• “Sugar powder dissolves faster in hot water than a sugar cube.”

• “Sugar dissolves faster in hot water than in hot tea.”

• "More water can make sugar dissolve faster."

• “Sugar dissolves faster in hot water than in cold water.”

Scientists ask questions, suggest answers, and do _____ to test their answers.

• conclusions

• hypotheses

• discoveries

• experiments

A _____ is a guess of the answer to a question. It must be testable.

• variable

• measurement

• hypothesis

• error

We can do experiments in the laboratory only when the laboratory technician is here.

• True

• False