Day/Night and Seasons
How long does one rotation of Earth take
24 hours
What is a substance that is made up of one substance
Pure substance
What causes the different phases of the Moon?
Position of the moon in its orbit
What two things in an aim
purpose and process
The separation of mixtures by passing through a filter
Filtration
How long does Earth's revolution take
365.25 days
solute and solvent
What phase of the Moon comes after a full moon?
Waning gibbous
The variable that the scientist manipulates
What method uses gravity to keep the heavier particles and pour the lighter ones out
Gravity seperation
Why do we experience different seasons throughout the year?
Due to the tilt and revolution
Describe the difference between a solution and a suspension
A solution is a mixture that looks the same throughout. The solute (e.g. salt or sugar) is completely dissolved in the solvent (e.g. water).
A suspension is a mixture with two distinct parts. The particles are not fully dissolved and are usually larger that will settle to the bottom.
What causes the tides
gravitational pull of the moon and sun
What is the correct order of a practical report
Aim, Hypothesis, Materials, Method, Results, Discussion and Conclusion
What is the insoluble substance left on filter paper called
residue
Explain why it is summer in Australia when it is winter in Europe.
Southern hemisphere (Aus) will be tilted towards the sun while northern hemisphere (Europe) will be tilted away from the sun
What is a saturated solution
a solution that cannot dissolve any more solute
Explain the difference between a solar eclipse and a lunar eclipse, including the position of the Sun, Earth, and Moon.
A solar eclipse happens when the Moon moves between the Sun and Earth, blocking sunlight from reaching Earth.
A lunar eclipse happens when the Earth is between the Sun and the Moon, casting a shadow on the Moon.
Why is it important to have controlled variables in an experiment
So you can be sure that any changes in the dependent variable are caused by the independent variable, making the results reliable.
Explain Distillation
A separation process that utilizes the principle of evaporation and condensation to isolate a specific component from a liquid mixture
Name the dates of the Summer solstice and Winter solstice in Canada
June 21
Describe concentration
The amount of solute that dissolves in a solvent
Why do we see more than one high tide and low tide each day?
Because the Earth rotates through two tidal bulges caused by the Moon’s gravity, most places experience two high tides and two low tides approximately every 24 hours.
A student tests whether plants grow faster in sunlight or shade. Name the independent, dependent, and one controlled variable,
Independent variable: Amount of light (sunlight vs. shade)
Dependent variable: Plant growth (e.g., height or number of leaves)
Controlled variable: Type of plant, amount of water, soil type, pot size, etc.
Explain the process of a process for separating colour components of a mixture
Chromotography - used to separate soluble inks.
Filter paper in placed in water with inks on it. The ink will separate into the different dyes