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What is the Umbra?
The darkest part of a shadow (centre)
A hypothesis is
a reasonable guess
What is a compound?
A substance formed from molecules made of different types of atoms.
What is decanting?
A method to separate suspensions by pouring off the liquid after the insoluble sediment has settled.
What is chromatography used for?
To separate different coloured dyes or inks
What is the penumbra?
Lighter part of the shadow
If you’re in the Northern Hemisphere, the moon waxes and wanes from which direction?
Right to Left
What is the rule for writing chemical symbols?
The first letter is capitalized and the second letter (if needed) is in lower case.
What is sieving?
A method used to separate different sized solid substances.
What is a solute?
The substance that is dissolved in another.
where do you need to be on Earth to experience a total solar eclipse?
Within the Path of Totality - the path of the moon’s umbral shadow
Which word is used to describe the lit portion of the moon getting smaller?
Waning
What is the force that keeps us on Earth
Gravity
What does centrifuging do?
Separates solid from liquid by spinning it rapidly.
What is a solvent?
A solution with many solute particles dissolved in it.
Approximately how often do solar eclipses occur?
Approx every 18 months or so
What ALWAYS forms when 2 or more atoms join together?
A molecule.
What is the force that stops something sliding
Friction
What are the three main states of matter?
Solids, liquids, and gases.
What is Brownian Motion?
The constant movement or vibration of particles.
Why do we only see one side of the moon?
Our moon takes about 29 days to rotate once on its axis which is also the time it takes the moon to orbit Earth. Due to this synchronous rotation, only one side of the moon ever faces Earth.
What are the names of the phases of the moon?
New Moon
Waxing Crescent
First Quarter
Waxing Gibbous
Full Moon
Waning Gibbous
Third / Last Quarter
Waning Crescent
Force is measured in
Newtons
What is a saturated solution?
A solution in which no more solute can dissolve at a given temperature.
How are solid particles arranged?
Bonded very strongly together, close as possible.