- 1. Science Chapter 4:Changing Environments Let's Begin!
2. Which event is most likely to change a forest habitat? A. The
wind pollinates pine cones B. Berries ripen in the bushes C. Baby
blue jays learn to fly D.There is no rain for three months 3.
Answer D.There is no rain for three months 4. How might a drought
change the environment? A. the ground may not hold all of the rain
B. plants may grow too quicklyfor the animals to eat them C. lakes
and rivers might dry upD.beaver dams might get washed away in the
flood 5. Answer C.lakes and rivers might dry up 6. What might
happen if elephants eat all of the plants in an area? A. Other
animals who eat those plants will leave in search of food B. The
elephants will move on to another area C. After a while, grasses
and small plants begin growing there D.All of the above 7. Answer
A. Other animals who eat those plants will leave in search of food
B. The elephants will move on to another area C. After a while,
grasses and small plants begin growing there D.All of the above 8.
Why might a seedling that sprouts after a forest fire be more
likely to grow into a tree than one that sprouted before the fire?
A. The fire kills many plants B. Before the fire, the tall trees
blocked the sunlight the sprouts needed to grow C. Before the fire,
there were no seeds on the ground D.After the fire there are no
seeds 9. Answer B. Before the fire, the tall trees blocked the
sunlight the sprouts needed to grow 10. What kind of organisms can
become endangered? A. only plants B. only animals C. only predators
D.any kind of organism 11. Answer D.any kind of organism 12. All of
the following organisms are extinct EXCEPT A. the giant panda B.
the passenger pigeon C. the wooly mammoth D.the dinosaurs 13.
Answer A. the giant panda 14. Which of these is NOT a fossil? A. a
dinosaur bone that has been turned to stone B. the impression of an
ancient giant fern in a rock C. the feather of a passenger pigeon
D.an ancient cockroach, pressed in mud, turned into stone 15.
Answer C. the feather of a passenger pigeon 16. Which food comes
from plants? A. spaghetti noodles B. rice C.tortillas D.all of the
above 17. Answer A. spaghetti noodles B. rice C.tortillas D.all of
the above 18. True or False: If homes are built far from farms,
they will NOT affect the environment. 19. False... but why? 20.
True or False: Litter makes top soil and mud. 21. False...but why
is that? 22. True or False: People can help save plants and animals
by recycling and planting trees. 23. True! Do you recycle or plant
trees? 24. True or False: Wool sweaters come from animals. 25.
True! Which animal? 26. True or False: A drought is a long period
of heavy rain. 27. False! What is a drought? 28. True or False:
Animals can change their habitats. 29. True! How can they change
it? 30. True or False: Endangered animals can become extinct if
they all die. 31. True! 32. True or False: Farmers do not change
the land in order to grow food. 33. False!How do they change the
land? 34. True or False: Pollution is anything harmful added to the
air, water, or land. 35. True! 36. True or False: Some zoos raise
babies of endangered species and thenrelease them into the wild
habitat. 37. True! Scientists study animals in the zoos. 38. Ways
that organisms can become endangered: 39. Ways that organisms can
become endangered:
- Natural changes in climate or environment may make survival
very difficult for some organisms
40. People often endanger organisms by destroying their
habitats, by hunting too many of them, or polluting their
environment 41. Suppose that some kind of insect destroys over half
of the world's cotton crop in one year.Predict some of the effects
of this loss. 42. Suppose that some kind of insect destroys over
half of the world's cotton crop in one year.Predict some of the
effects of this loss.
- Cotton will become scarce
43. Cost of cotton cloth will go up 44. More clothes will be
made from wool, other plants, and from man made materials 45.
That's it! Remember to study for the test!
