Living Things
MRS GREN is the acronym used to remember the characteristics of living things. What does the letter G represent?
Growth
What instrument is used to observe the night sky?
Telescope
True/False
Particles are constantly moving.
True
What is the best separation technique to remove iron nails from sand?
Magnet or filtration
Each step in a method must start with a _ _ _ _ .
Verb
MRS GREN is the acronym used to remember the characteristics of living things. What does the letter R represent?
Reproduction/Respiration
What is light pollution?
Human made artificial light used at night which minimises the visibility of the dark sky.
True/False
When a substance is heated up, the particles move faster.
True
What is a meniscus? Which part of the meniscus should be used to measure?
Molecules of the liquid are attracted to the container which creates a curved line. The bottom of the meniscus is used to measure.
What is an independent variable?
Something that is being deliberately changed/tested
MRS GREN is the acronym used to remember the characteristics of living things. What does the letter M represent?
Movement
Answers vary but may include disruption to migrating patterns...breeding challenges.. impact on diet
What is density? Is a brick more/less dense than a sponge?
Density is a measure of how tightly particles are packed together of an object. A brick is more dense that a sponge as it has more matter (particles) that are packed tightly together.
What technique is best used to separate salt from sea water?
Evaporation
What is a dependent variable?
Something that is being measured/recorded
MRS GREN is the acronym used to remember the characteristics of living things. What does the letter S represent?
Stimulus - responds to stimulus
What is the heliocentric model of the solar system?
This model shows that the Sun is at the centre of the solar system and planets rotate around it.
mass divided by volume
What technique was used to separate colour in pen/texta ink?
Chr_ _ _ _ _ _ _ _ _ _ _
Chromatography
What are controlled variables?
Conditions that are kept the same to ensure a fair test
Describe the process of photosynthesis and the impact it has on our planet
Photosynthesis is the process that involves plants using sunlight and CO2 to gain energy and they convert this as oxygen and sugar as waste products. This process supports our planet by providing an essential need for all living things.
What is the geocentric model of the solar system?
The Earth is at the centre of the solar system and planets rotate around it.
Stacey wanted to measure the volume of a rock. She used the water displacement method so began by pouring 100ml of water in a measuring cylinder. She placed the rock into the water which now measures as 147ml. What should be the next steps to calculate volume?
147-100 = 47ml
That means that the rock is 47cm3.
Explain how the water cycle works by using the terms
Eva_ _ _ _ _ _ _ _
Con _ _ _ _ _ _ _ _ _
Pre _ _ _ _ _ _ _ _ _ _
Run _ _ _
Evaporation
Condensation
Precipitation
Run-off
Stacey experiments the affect of sugar on plant height growth. She adds sugar to the soil of one plant and no sugar to the other. What is the independent and dependent variable?
Independent - sugar or no sugar
Dependent - plant height growth