Show:
Forces
Cells
Experimental Design
Mixtures/Separation Techniques
Earth in Space
100

A force is a p_ _ _, p_ _ _, or t_ _ _ _.

push, pull or twist?

100
Name three organelles that an animal cell has

What is a cell?

100
What should be included in a hypothesis
A prediction with your Independent and Dependent variables
100

The three states of matter.

What is solid, liquid and gas?

100

The fourth planet from the sun.

Mars

200
Name the three types of non-contact forces

gravity, magnetism and electrostatic

200

What is the function of the cell membrane

controls what comes in and out of the cell

200
Explain the difference between the independent and dependent variable

An independent variable is purposely altered by the researcher. This is the variable being investigated. A dependent variable is an outcome or value that results from the change in the independent variable. This is the variable that is measured during an investigation.

200

What is a concentrated solution?

there is a lot of solute in the solvent (eg. strong cordial)

200
The cause of the seasons

tilt of the Earth

300

Name three things you can do to decrease friction.

Add a lubricant
Make the surface smoother
Change the shape of the object to a streamlined design

300
Name two differences between a prokaryotic and eukaryotic cell
Pro: Do not have a nucleus, Do not have membrane bound organelles

Euk: Have a nucleus, Have membrane bound organelles

300

Why should only one variable at a time be changed in scientific investigations?

If more than one variable were changed at a time, it would be difficult to determine which of the variables was responsible for the result obtained.

300

Type of mixture that is whipped cream. 

colloid

300

The causes of a solar eclipse.

moon blocking the sun

400

The unit force is measured in.

Newtons (N).

400

Where does photosynthesis occur and what is the equation

Chloroplast
Water + Carbon Dioxide = Glucose + Oxygen

400

Advertisements for washing powders and liquids often claim that they are more effective than others. Imagine that you are conducting an experiment to test a range of washing powders and liquids.

Variables may include volume of water, mass/volume of cleaning product, temperature of water, amount of fabric/clothes, degree of staining of fabric/clothes, length of time washed for and washing machine used.

400

Name and describe the separation technique used to separate two soluble liquids

Distillation

the process during which a liquid is heated to boiling point in order to vaporize it, then condensed back into a liquid so that it is separated from impurities or other solutes

400

During which phase of the moon is the moon between the sun and the Earth

New moon

500

How do you know if forces are balanced and what does this mean?

Arrows are the same size and it is not moving or moving at a constant speed

500

What is the cell theory?

 1. Cells are the basic unit of life

 2. All living things are made of cells

 3. Cells come from pre-existing cells

500

Name the steps included in lighting a bunsen burner

  1. Connect the rubber hose to the gas tap.
  2. Close the air hole of the Bunsen burner collar.
  3. Light a match and hold it over the barrel.
  4. Turn on the gas tap and a yellow flame will appear.
  5. Adjust the flame by moving the collar until the air hole is open.
500

Separation technique for separating substances based on their solubility.

chromatography

500

Explain why there are 365 days in most years but 366 days in every fourth year.

Every fourth year is a leap year, which compensates for the calendar year being 365 days when in fact it actually takes 365.25 days for the Earth to revolve around the sun