misc
How is a population different from a communityÉ
a population is a group of the same species in one spot ex. mice in west humber and a community is all the species in a certain area like the mice, humans, centipedes and assorted bugs in west humber be flexible on this answer
what are the units for resistance
Ohms
what layer of Earth holds all the living things?
biosphere
What are the 3 states of matter?
Liquid, solid, and gas are the 3 states of matter
What process is producing energy in the Sun?
nuclear fusion
what part of a circuit transforms energy from one form to another
a load
what is the unit for electrical power
Watt
what process traps nitrogen gas and transforms it into a form that plants can absorb
nitrogen fixation
What is the compound K?
Potassium
what is a huge collection of dust, stars, solar systems that rotates called
a galaxy
what small rock from space just fell on the road
meteorite
What quantity describes the flow of charged particles
current
what are the products of photosynthesis
sugar (glucose) and oxygen
How do you calculate density?
Density= Mass over volume
what is the name of the small space rock that fell from the sky and hit the car called
a meteorite
how many electrons do all Noble gases have in their outer shell except Helium
8
what particle type moves in a wire
electrons
what is commensalism?
in a close relationship one species benefits and the other is unaffected
What are the 5 signs of a chemical change?
Change of :
- colour
- temperature
- odour
Formation of :
- bubbles
- solids
why do we see the northern lights at the north pole but not in florida?
the magnetic field of Earth is strongest at the poles and therefore attracts the solar particles that cause the light
what physical property describes the shininess of an object
lustre
what rotates in a coil of wire to produce AC current
magnet
what term describes the process of adding excess nutrients to a body of water?
eutrophication
Find the density of a cube with a mass of 211.24 g and a side length of 4 cm.
3.3g/cm3 is the density
when the Moon blocks the Sunlight from getting to Earth it is called?
solar eclipse