Countdown to FSA Science 5ht gr - W2D3

Which of the following best describes scientific investigations?

• a. Scientific investigations are always controlled experiments.

• b. Only trained scientists can carry out scientific investigations.

• c. Scientific investigations always follow similar steps done in the same order.

• d. The steps in a scientific investigation can vary but always include gathering evidence.

Earth appears to be the only planet that can support life as we know it. Which of the following gives Earth the conditions needed to support life?

• a) The shape of the orbit

• b) The closeness of Mars

• c) The presence of a Moon

• d) The distance from the Sun

A plant is a renewable resource. Which of the following can also be described as a renewable resource?

• a. coal

• b. oil

• c. oxygen

• d. quartz

The temperature of the air affects other weather conditions. Which of the following describes how temperature affects humidity?

• a. warmer air holds more water vapor than colder air

• b. colder air holds more water vapor than warmer air

• c. colder air is denser than warmer air

• d. warmer air is less dense than colder air

George's Science teacher has a mixture of table salt and iron filings. Which of the following would be the best way to separate the salt and the iron filings?

• a. use a magnet to pull the iron filings from the salt

• b. add food coloring to the mixture to make the salt change color

• c. pour them into a beaker of water and see if the iron filings float

• d. heat up the mixture to see if the salt or the iron filings will burn away

When Bobby and his parents first moved into their house, the brick fireplace was very clean. Now that they have built a few fires in their fireplace, the inside is covered with black powder. Bobby’s mother tells him that this powder is called soot. Which of the following best explains how the soot came to be in the fireplace?

• a. A chemical reaction occurred between the bricks and air, making a new substance called soot.

• b. A chemical reaction occurred when wood burned, making a new substance called soot.

• c. Some of the bricks in the fireplace melted and made a new substance called soot.

• d. The wood in the fireplace evaporated and made a new substance called soot.

In energy transformation, energy is transformed from one form into another. Angel drew three pictures to show how different kinds of energy transforms. Which of the following pictures that Angel drew represents electrical energy being transformed into heat energy?

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Ever rolls a tennis ball along the ground. Which of the following best explains what will happen if balanced forces act on the ball?

• a. the ball’s motion will not change

• b. the ball’s direction will change

• c. the ball’s speed will change

• d. the ball will stop moving

Sharks and porpoises are very different. The porpoise is a mammal while the shark is a fish. What is one thing these two creatures have in common?

• a. both lay eggs

• b. both have scales and fins

• c. both have an internal skeleton

• d. both breathe through gills and nostrils

As caterpillars, the larvae of the Mangrove Buckeye butterfly eat mangrove leaves. Similarly, nymphs of Cicadas suck the juices from roots of a variety of plants. What stage of the life cycle do caterpillars of the Mangrove Buckeye Butterfly undergo next that Cicada nymphs do not?

• a. pupa

• b. adolescent

• c. egg

• d. adult