Year 7 Science
How many branches of science have we learnt this year?
Four
What is the name for the science of naming and grouping living things.
Taxonomy
A mixture where you can clearly see the different parts (like cereal and milk) is called a h____________ mixture
Heterogeneous mixture
Define forces.
Forces are a push or a pull on an object to change its motion.
Earth spins on this imaginary line
Axis
Dichotomous key
How many branches does question on a dichotomous key have?
2
The process of turning a liquid into a gas.
Evaporation
What are contact forces and give an example:
Forces that occur when two objects touch each other such as when you push someone over (pull a cart, there are a few)
True or false: The Moon affects the Earth's tides
True
List the 4 fields of science we have learnt this year
Chemistry, Earth/Space Science, Physics & Biology
There are five kingdoms of life, what are all 5 of them?
Animalia, plantae, fungi, protista, monera.
The technique used to separate sand from water.
Filtration
What kind of force is a balanced force?
Two forces that are equal in size and opposite in direction. When forces are balanced, an object does not move.
The ________ eclipse occurs when the moon blocks the sun
Solar
What do all good experiments start with?
Asking a question OR hypothesis OR a research question
What are organisms that break down dead materials and recycle nutrients called.
Decomposers
Define solute, solvent and solution
Give an example of a solution.
Solute = the substance that is dissolving
Solvent = the substance that the solute dissolves into
Solution = the substance that is the product of a solute and solvent
Eg. Saltwater or soft drink or tea
Define Newton's 3 laws.
An object will stay at rest or keep moving at the same speed in a straight line unless a force acts on it.
F = ma
For every action, there is an equal and opposite reaction.
Determine which phase of the moon lunar eclipses occur, and explain why
Full Moon
Because the Sun, Earth, and Moon must be aligned with Earth in the middle, which only happens at full moon
List the 6 steps for lighting a bunsen burner
1. Tie hair back, clear area, put on safety glasses and check gas hose.
2. Connect the rubber hose to the gas tap securely.
3. Make sure the air hole is CLOSED (safety flame).
4. Use a safety lighter or match to light the top of the burner.
5. Hold the match about 1 cm above the top of the barrel
6. Turn on the gas gently at the gas tap.
What are the 7 classifications in the Linnaean classification system?
kingdom, phylum, class, order, family, genus, species (this was hard so times your winning points by 2)
This method separates a mixture based on different boiling points (often used to purify water).
Distillation
What are the 4 forces acting on a balloon powered car travelling along a classroom floor?
gravity, normal force, thrust and friction/air resistance
List correct order for the phases of the moon, starting from new moon.
New Moon → Waxing Crescent → First Quarter → Waxing Gibbous → Full Moon → Waning Gibbous → Last/Third Quarter → Waning Crescent