Working like a Scientist Test 2

The series of steps designed to help scientists solve problems and answer questions is called the...

• Scientific method

• Observation

• Experiment

• Hypothesis

Item 2 refers to the following units of measurement which were used in an experiment.

^oC g cm ml

Which of the following instruments was NOT used in this experiment?

• Ruler

• Top pan Balance

• Stopwatch

• Thermometer

When you decide whether or not the data supports the original hypothesis, you are

• asking questions

• forming a hypothesis

• making observations

• drawing conclusions

In an experiment, the variable that is changed or manipulated is called the

• conclusion

• controlled variable

• dependent variable

• independent variable

What happens to the dependent variable in an experiment?

• It changes as the independent variable changes.

• It changes as conditions in the experiment become favourable to change.

• It does not change

• It is tested to determine its validity.

In the SI system, the basic unit of length is the

• centimeter

• kilometer

• gram

• meter

The basic unit of mass in the SI system is the

• meter

• ounce

• liter

• gram

In the SI system of measurement, the basic unit of temperature is the degrees

• Kelvin

• Celsius

• Fahrenheit

• hot or cold

Which one of the following is NOT an issue facing the Caribbean?

• Damage to property caused by hurricanes

• Limited supply of naturally occurring resources

• Limited sunshine hours for the use of solar devices

• Limited supplies of potable water

In an investigation into what affects the swing of a pendulum, a group decided to find out how the length of the string affects how quickly it swings.

Their independent variable is the:

• number of swings made by the pendulum in a set time.

• mass of the bob at the end of the pendulum.

• length of the string.

• position the pendulum is released from.