By Stephen Pegler on Monday, January 29, 2007

1 & 2.  List 2 types of fossils and describe them.

3.  Why do we know so little about the Precambrian Time?

4.  What do we call organisms with a true nucleus?

5.  What is the time that half of a radioactive material takes to decay?

By Stephen Pegler on Sunday, January 28, 2007

1.  What are the longest time periods in the Earth's history called?

2.  What is the name given to the longest time period in the Earth's history?

3.  What is a fossil?

4.  Which is more likely to form a fossil - an octopus or an oyster?  Why?

5.  Which is more likely to make a good index fossil
      a.  Organism 1 lived in South America for 5 million years
      b.  Organism 2 lived in Asia and Europe for only 2 million years

By Stephen Pegler on Monday, January 22, 2007

Summer camp at the University of Maryland

By Stephen Pegler on Wednesday, January 17, 2007

1.  Camouflage benefits insects by helping them to:

2.  Ponds and rivers are two types of:

3.  One reason to protect Earth’s biodiversity is to preserve undiscovered:

4.  As water moves slowly through a wetland, some waste materials settle out, some wastes are absorbed by plants, and silt and mud is trapped by plant roots. In this way, wetlands act as natural:

5.  The dense cover created by the tops of trees in the rainforest is called the:

By Stephen Pegler on Monday, January 15, 2007

1.  Why was there a vacation day yesterday?

2.  What do we remember him for?

3.  What was his occupation?

4.  What famous person's name did he have?

5.  What did this earlier person do?

By Stephen Pegler on Friday, January 12, 2007

1.  How do you determine the speed of a river?
a.   Speed = distance/time          b.  Speed = time/distance    c. Speed = length x width  d. Speed = height/width

2.  Pitcher plants are plants that    a. eat small insects and animals that fall inside the plant.      b. contain round spheres that look like a baseball.  c. open at rainy times only.    d. live in the desert.

3.  A type of fern that grows in the rainforest that can be eaten is called a     a.  violin.        b.  fiddlehead.             c.&am ... Read More »

Science Warmups

By Stephen Pegler on Thursday, January 11, 2007

1.  As water moves slowly through a wetland, some waste materials settle out, some wastes are absorbed by plants, and silt and mud is trapped by plant roots. In this way, wetlands act as natural    a.  filters.             b.  habitats.     c.  tributaries.         d.  artesian wells.

2.  Which group of organisms would all be found living in a tropical rain forest?   a.  Lizards, insects, cacti, kangaroos         b.  Vines, palm trees, tree frogs, monkeys    c.  Evergreens, moose, weasels, mink            d.  Lich ... Read More »

Science Warmups

By Stephen Pegler on Monday, January 08, 2007

1.  All of the following are threats to biodiversity EXCEPT
a.  habitat destruction.     b.  gene pool diversity.     c.  pollution.     d.  exotic species.

2.    One reason to protect Earth’s biodiversity is to preserve undiscovered
a.  diseases.             b.  cancers.                 c.  minerals.             d.  medicines.

3.    The place where an organism lives and that provides the things t ... Read More »

By Stephen Pegler on Sunday, January 07, 2007

1.  An organism that eats wastes and dead organisms is a   a.  consumer.        b.  decomposer.    c.  pollinator.        d.  producers.

2.  The source of energy for most autotrophs is
a.  water.        b.  the sun.        c.  heterotrophs.    d.  other autotrophs.

3.  Ponds and rivers are two types of   a.  marine ecosystems.     b.  rain forest biomes.    c.  freshwater ecosystems.    d.  estuary ecosystems.

... Read More »

By Stephen Pegler on Tuesday, January 02, 2007

1. The toes of perching birds are adapted to help birds a. wade in water. b. lock onto a branch. c. grab prey. d. crack seeds open.

2. What adaptation helps a poison dart frog survive in its environment? a. It uses its tongue to catch underwater animals. b. It uses its strong legs to swim away from predators. c. It uses its eyes to see at night. d. It uses its bright colors to warn about poisons.

3. Camouflage benefits insects by helping them to a. reproduce. b. move especially fast. c. live in a variety of environments. d. avoid predators.

4. How do some insects help other living things? a. by helping them reproduce b. by spinning fibers made of silk c. by spreading disease d. by fertilizing soil

5. What types of foods do insects eat?
a. only plants b. only animals c. only paper d. anything living or once-living