SCIENCE 7 PRE-TEST (PART 1)

An experimental set up that helps ensure that only one factor is changed while keeping everything else constant.

• Conclusion

• Fair Test

• Hypothesis

• Scientific method

Which of the following is NOT a characteristic of liquids?

• Liquids take the shape of the container.

• Liquids have a definite volume.

• Atoms of liquids have high kinetic energy.

• Particles of liquids are closely packed.

It is a simple statement that presents a possible solution to problem.

• Hypothesis

• Interview

• Research

• Test

It is anything that occupies space and has mass.

• Gas

• Liquid

• Matter

• Solid

The process of using the five senses to identify a problem.

• Conclusion

• Experimentation

• Hypothesis

• Observation

Imagine you are in a chemistry lab and you need to choose a container for mixing liquids. Which of the following options would you select?

• Beaker

• Evaporating dish

• Petri dish

• Test tube holder

It is a container used in laboratories to culture different types of cells.

• Beaker

• Evaporating dish

• Petri dish

• Test tube holder

The following are properties of gases EXCEPT for one.

• Gases have no definite shape.

• Gases do not have a definite volume.

• Gas particles are not compressed.

• Gases do not have a definite mass.

The variables in the experiment that are observed or measured.

• Constant variables

• Controlled variables

• Dependent variables

• Independent variables

A Grade 7 student wants to view cells using a compound microscope with a magnification of 100x. Which of the following objective lenses should be used if the eyepiece 10x?

• 10x

• 20x

• 40x

• 60x