2017 Final Review – Science 7 – Corley
Answers the following in complete sentences in your journal. Grading 5/19
1. What characteristics does a planet have that is found in the habitable zone?
IT NEEDS TO BE THE CORRECT DISTANCE FROM A STAR TO ENABLE PROPER
TEMPERTAURES TO ALLOW FOR LIQUID WATER AND OTHER LIFE NEEDS
2. Which characteristic of earth is most responsible for its ability to support life?
THE SUN
3. List the compositions of Earth’s atmosphere.
78% NITROGEN, 21% OXYGEN, AND 1% OTHER GASES
4. What is the difference between natural selection and selective breeding?
NATURAL SELECTION OCCURS THROUGH ‘SURVIVAL OF THE FITTEST’ IN THE
NATURAL ENVIRONMENT AND SELECTIVE BREEDING TAKES PLACES WHEN
HUMANS SELECT ORGANISMS TO BREED FOR A SPECIFIC OUTCOME (THINK
PUPPIES)
5. List and explain the formula and process of photosynthesis.
CARBON DIOXIDE + WATER + SUNLIGHT COMBINES TO CREATE OXYGEN AND
GLUCOSE; RADIANT ENERGY FROM THE SUN BECOMES CHEMICAL ENERGY IN
THE FORM OF GLUCOSE
6. What is the role of a decomposer in an ecosystem?
DECOMPOSERS BREAK DOWN BIOMASS, SUCH AS LEAVES AND DEAD
ORGANISMS TO PREVENT BUILD UP OVER TIME ON THE FOREST FLOOR.
7. What is the purpose of xylem in a plant?
TRASPORTS WATER AND MINERALS IN THE PLANT
8. Create an energy pyramid for the following food web:
HAWK
SNAKE, HAWK
PRAIRE DOG, MICE
GRASS
9. How does the animal adaptation of a bird beak help it to survive?
THE SHAPE DETERMINES WHAT TYPE OF FOOD THE BIRD IS ABLE TO EAT; POINTY
BEAKS HELP BIRDS TO PICK INSECTS OUT OF A TREE
10. What leading factors cause biomes to differ?
TEMPERATURE, RAINFALL, AND AVAILABLE FOOD/SHELTER
2017 Final Review – Science 7 – Corley
Answers the following in complete sentences in your journal. Grading 5/19
11. What affect does the human population have on the biodiversity of the plan
species in the rain forest?
ACCORDING TO THE GRAPH, AS HUMAN POPULATION INCREASES, THEN
BIODIVERSITY OF RAINFOREST SPECIES DECREASES
12. What causes a plant to wilt?
LACK OF TURGOR PRESSURE/WATER IN THE PLANT CAUSES IT TO WILT
13. What energy transformation takes place in a compost bin?
CHEMICAL TO THERMAL
14. What is homeostasis?
A LIVIING ORGANISM’S ABILITY TO MAINTAIN HEALTH
15. Explain the different trophic levels.
PRODUCER – PLANTS, CREATE THEIR OWN FOOD
PRIMARY CONSUMER – CONSUMES THE PLANT FOR ENERGY
SECONDARY CONSUMER – CONSUMES THE PRIMARY CONSUMER FOR ENERGY
TERTIARY CONSUMER – CONSUMES THE SECONDARY CONSUMER FOR ENERGY
16. What is a pioneer species?
ENTER AN AREA TO BREAK DOWN ROCK AND CREATE SOIL IN ORDER FOR
SUCCESSION TO BEGIN
17. What is the 10% rule?
10 UNITS OF ENERGY ARE PASSED ON FROM ONE TROPHIC LEVEL TO THE NEXT
18. What is the difference between primary and secondary succession?
PRIMARY SUCCESSION IS WHERE LIFE FORMS AFTER PIONEER SPECIES ENTERS
THE AREA TO BREAK DOWN ROCK AND CREATE SOIL (TAKES LONGER);
SECONDARY SUCCESSION IS WHEN LIFE FORMS IN AN AREA AFTER A
DISTURBANCE AND SOIL IS IN PLACE
19. Gills do what in order for underwater animals to survive?
GILLS ENABLE FISH TO BREATHE UNDERWATER
20. Why do birds have hollow bones?
TO ENABLE THEM TO FLY
Word
21.
Hydrotropism
22.
Thigmotropism
Definition
PLANT MOVES IN RESPONSE TO
WATER
PLANT MOVES IN RESPONSE TO
TOUCH
2017 Final Review – Science 7 – Corley
Answers the following in complete sentences in your journal. Grading 5/19
23.
Geotropism
24.
Phototropism
PLANT MOVES IN RESPONSE TO
GRAVITY
PLANT MOVES IN RESPONSE TO
LIGHT