Properties and Changes of Matter
What is the difference between a physical and chemical change?
Physical changes can be reversed and the properties of the item do not change. Chemical changes the properties are changed.
Newton's 3rd law states
Hint: For every action...
For every action there is an equal and opposite reaction.
Earth's revolution causes _________ while earth's rotation causes _______ and _________
Hint: The first blank starts with S
Seasons, day, night
Who first discovered cells?
How many scientist in total helped cell theory?
Robert Hook
5
What are the 4 sections of a ecosystem pyramid.
Organism,population,community,ecosystem
Which has more kinetic energy a solid a liquid or a gas
Gas
Tim pulls left on the rope at 20 Newtons Lisa pulls right on the rope at 20 Newtons. Is this balanced or unbalanced?
Balanced 20-20=0
Neap tides are stronger than spring tides
true or false
FALSE
What is the difference between prokaryotic and eukaryotic? Describe at least 2 characteristics for each.
Pro: unicellular, smaller, older, free floating Dna, no nucleus
Euk: multicellular, bigger, younger, Dna in nucleus
Give an example of predation.
Animal hunting another animal
When an ice cube melts its kinetic energy
a. increases
b. decreases
A
What is the energy transformation of a fan being plugged in and turned on?
Electrical to Mechanical
What are the 4 layers of Earth AND which layer is liquid metal?
Inner core,outer core,mantle,crust
Outer core is liquid metal
Give an example of an autotroph and a heterotroph.
Autotrophs: Plants
Heterotrophs: animals, fungi
What are 4 examples of renewable energy.
Hydropower,Geothermal,Biomass,Wind Energy, Solar
What is the difference between a HOMOgeneous mixture and a HETEROgeneous mixture
Homogeneous have uniform composition while heterogeneous does not
What is the difference between gravitational potential energy and kinetic energy?
GPE depends on the position of an object while kinetic depends on the objects motion.
Earth has 4 spheres name each one and what is represents on is done for you
Geosphere: Earth
Hydro:water
Atmo:air
Bio: life
Name 2 biotic and 2 abiotic things organisms compete for.
Biotic: food, mates
Abiotic: water, shelter, light,good soil
What is crop rotation
A method of changing what crops are grown in order to preserve the health of the soil
What are the signs of chemical change
Hint:City, Girls,Really,Love,Their, Phones
Color change, gas, rust, light, temperature, precipitate
What is the difference between an applied force and a normal force?
Applied means someone or something is acting on an object like pushing a box. Normal force is like a box just sitting on a table, the force is gravity.
What are the 3 rocks of the rock cycle and what do you have to do to get to Magma?
Sedimentary, Metamorphic, Igneous
Magma is melted rock
Give one example of each: mutualism (+,+) , parasitism (+,-), and commensalism (+,0)
Teacher will determine correct response
Describe the difference between predation and parasitism.
Predation usually results in an animal being killed immediately as a food source. Parasitism is over a longer period of time and does not always result in death.