physics
What is the purpose of a simple machine?
To make work easier by changing the size or direction of a force.
define force
push or pull
What is a dichotomous key used for?
identify organisms based off their physical, observable features
Name the five kingdoms of living things.
Animalia, Plantae, Fungi, Protista, Monera
Which class lays eggs and has feathers?
birds
What is the point called where a lever pivots?
fulcrum
What happens when forces on an object are balanced?
The object stays still or moves at a constant speed.
which 7 life processes (MRSGREN) do plants and animals share?
all- if something is alive it fufills all 7 of MRSGREN
Which kingdom includes bacteria?
monera
Name the five classes of vertebrates.
Fish, Amphibians, Reptiles, Birds, Mammals.
Which class of lever has the load between the effort and the fulcrum?
second class
What happens when forces are unbalanced?
start stop, speed up slow down, change direction, change shape
which life process takes in oxygen into the body
respiration
Which kingdom includes moulds?
fungi
Which class gives birth to live young, feeds them milk and is covered in hair or fur
mammals
name all 6 simple machines
lever, wheel and axel, pulley, inclined plane, wedge, screw
Give an example of an unbalanced force changing an object’s motion
kicking a ball
Which life process is about getting rid of waste?
excretion
Which two kingdoms contain single-celled organisms?
protista and monera
state 3 features of class amphibia
slimy skin, soft shelled eggs, have gills that develop into lungs
Give one example of each class of lever.
First class: seesaw Second class: wheelbarrow
Third class: fishing rod or human arm
can your weight change if you go to uranus?
yes, depending on the gfs of the planet your weight can change
What are the seven main levels of classification?
kingdom, phylum, class, order, family, genus, species
Compare the main differences between animals and plants.
Animals: no chlorophyll, eat food to get energy.
Plants: have chlorophyll, make their own food by photosynthesis.
compare how fish, amphibians and mammals breathe
fish: use gills
amphibians: gills that develop into lungs
mammals: lungs