End of the Year Science Test

Which is the BEST comparison of static electricity and electric current?

• Static electricity flows through wires, while electric current jumps across wires

• Static elecctricity involves open circuits, while electric current involves closed circuits

• Static electricity involves the build-up of electrons in an object, while electric current involves the flow of electrons through wires

• Static electricity begins with objects that have a negative charge, while electric current begins with objects that have a positive charge.

Which statement about vertebrates is true?

• Vertebrates have skeletons.

• Vertebrates live only on land.

• Most animals are vertebrates.

• Vertebrates do not have backbones.

A student studies algae in a lake. The student records her observations in the table above. Which argument is supported by the student's evidence?

• Some microorganisms are harmful to animals

• Many animals are beneficial to microorganisms

• Some microorganisms are beneficial to animals

• microorganisms are too small to affect most animals

A student researches several plants. She then groups them according to their characteristics. (See chart above) Which are MOST LIKELY the names of the plant groups?

• ferns, trees

• ferns

• spore producers, seed producers

• flowering plants, coniferous plants

Which statement describes how deposition builds up the surface of a floodplain?

• Lava flows from a volcano and piles up

• Rainwater seeps into the ground and freezes

• A river flows over its banks and slows down

• A river slows down as it flows into the ocean

A student carries out an investigation to observe a change of state in water. She records her observations and data in the diagram above. Which argument is supported by the student's observations?

• A decrease in temperature makes water change from a liquid to a solid

• A decrease in temperature makes water change from a solid to a liquid

• An increase in temperature makes water change from a liquid to a solid

• An increase in temperature makes water change from a solid to a liquid

A scientist observes a pair of bald eagles as they raise their chicks. The adult eagles fly from the nest to a nearby lake, where they hunt for fish. Which question would the scientist MOST LIKELY ask to determine whether fishing is an instinct or a learned behavior in bald eagles.

• Do the eagles eat anything other than fish?

• How old are the chicks when they start to fish?

• Will the adult eagles show the chicks how to fish?

• How is an instinct different from a learned behavior?

A scientist plans to make models of three kinds of cells; oak leaf, squirrel muscle, and fern leaf. Which model(s) will have organelles that contain chlorophyll?

• only the fern leaf cell

• only the squirrel muscle cell

• the fern leaf cell and the oak leaf cell

• the oak leaf cell, the squirrel muscle cell, and the fern leaf cell

The leaders of a coastal town want to slow the erosion of a nearby beach. Which technology should they research?

• groins

• levees

• storm drains

• beach nourishment

A student carries out an investigation and records his steps and observations in the table above. During which step does the student gather evidence that a chemical change occurs?

• step 1

• step 2

• step 3

• step 4