Transcript OAKS Prep
OAKS Prep Wednesday April 9th 2014 • Welcome! • Take out your review packet and pick up your practice test from the front counter. • Review your test and work on making sure your self- assessment (yellow page) is complete. Crust and mantle…….. • • • • • • • How far is it from the surface to the center of the earth? 6371km The Earth’s crust is _________ km thick. 100 or 5-70km The inner core is made from iron and ________. Nickle The plastic-like layer of the Earth is called the ___________. • Mantle/ Asthenosphere • The innermost layer of the Earth is the ____________. • Inner Core Day 2- Ecosystems, Natural Selection and Natural Resources Living things on Earth interact. Kingdoms of Life • Open to page 7 in your review packet Kingdoms of Life • How do we classify life? – The number of cells – The type of nucleus in their cells – How they eat Unicellular has only one cell per being Example- Archaea, Bacteria, Protista Multicellular has many cells per being Example- Fungi, Plantae, Animalia Kingdoms of Life • Prokaryotic = no membrane around the nucleus – Example- Archaea, Bacteria • Eukaryotic= do have a membrane around the nucleus – Example- Protista, Fungi, Plantae, Animalia • Autotroph= can make their own food – Example- Archaea, Bacteria, Protista, Plantae • Heterotroph= must get there food from others -Example- Bacteria, Protista, Fungi, Animalia Kingdoms of Life • If you were asked to classify an organism that is multicellular and autotrophic, in which Kingdom might you place it? • Plantae Kingdoms of Life • If your mystery organism is unicellular and prokaryotic, into which two Kingdoms might you place it? • Archaea or Bacteria Kingdoms of Life • If the mystery organism is multicellular, eukaryotic and heterotrophic, it could belong to which twoKingdoms? • Fungi and animalia Types of Plants and Animals * Monocot= grass (means 1 leaf) • Dicot= most everything else (means at least 2 leaves) Types of Plants and Animals • Conifer = reproduces with seeds in cones, usually has needles, usually green all year. Types of Plants and Animals • Deciduous- has leaves that usually change color and fall during autumn; reproduces with seeds, fruit and flowers. Types of Plants and Animals • Arthropods= animals with jointed legs and exoskeletons. Types of Plants and Animals • Reptiles= reproduce by laying eggs, are covered in scaly skin, and are cold- blooded. Types of Plants and Animals • Birds= reproduce by laying eggs, have feathers, many can fly, cold blooded. Types of Plants and Animals • Amphibians = reproduce by laying eggs, can live on land and in the water, go through metamorphosis. Types of Plants and Animals • Mammals- reproduce with live births, are covered in hair, warm blooded. Types of Plants and Animals • Fish- have scales, bones, gills, and are cold blooded. Ecosystems • An ecosystem is a community of living organisms. Ecosystems provide resources. • All life needs….. – Food – Shelter – Water – Space ….to survive. Natural Resources • Are materials we use/need to survive. • Some are renewable, like wood and oxygen • Some are nonrenewable, like oil Natural Selection Why do these birds have different beaks? Natural Selection • When biological traits become more or less common in a population based on the environment the organism lives in. Food Webs • In a ecosystem living things are connected by who they eat and who eats them. Food Webs Food Webs Practice Questions • Which of the following would be considered a nonrenewable resource? A. sand B. ferns C. coal D. fresh water Answer- C Practice Questions • Which organism would be considered an autotroph? – A. tomato plant – C. mushroom – ANSWER- A B. giraffe D. toad Practice Questions • In the food web below, which organism would be considered a secondary consumer? – A. Hawk – C. Mouse – ANSWER- B B. Snake D. Grass