Science

The abalone is a type of sea snail. Adult abalones slowly crawl over rocks near the shore, while larvae float in the water. Which organisms have a life cycle that is most like that of abalones?

• Frogs

• Humans

• Snakes

• Birds

Which statement correctly describes the transfer of energy in a food chain in this wetland?

• Energy is transferred from hawks to shrews to grasshoppers to marsh grasses.

• Energy is transferred from marsh grasses to crickets to hawks to frogs.

• Energy is transferred from grasshoppers to crickets to frogs to hawks.

• Energy is transferred from cattails to crickets to shrews to hawks.

Karen observes the moon phase to be waxing gibbous. What is the next moon phase to occur?

• Waning Gibbous

• Full Moon

• Waxing Crescent

• New Moon

Why is it important to form a hypothesis before performing an experiment?

• Developing a hypothesis ensures that the lab will be safe

• The experiment will take too much time to complete if there is no hypothesis

• The hypothesis tell what the experiment is go to be testing

Mara is creating a model of ammonium phosphate, (NH₄)₃PO₄. She will use blue beads for nitrogen atoms, red beads for hydrogen atoms, orange beads for phosphorus atoms, and green beads for oxygen atoms. How many beads will she need of each color?

• 3 blue, 12 red, 1 orange, and 4 green

• 1 blue, 4 red, 1 orange, and 4 green

• 1 blue, 4 red, 3 orange, and 4 green

• 3 blue, 4 red, 4 orange, and 1 green

Which statement describes the energy changes that occur when water in a tea kettle is heated on a stove that uses natural gas?

• Some of the chemical energy in the natural gas transforms into thermal energy, which heats the water. Then some of the thermal energy changes into sound energy when the water forms steam and the steam leaves the kettle.

• Some of the thermal energy in the natural gas transforms into sound energy when the water becomes hot. Then some of the sound energy changes into light energy when the kettle becomes warm.

• Some of the electrical energy in the natural gas transforms into thermal energy, which causes the water to form steam. Then some of the thermal energy changes into sound energy and light energy when the steam leaves the kettle.

• Some of the light energy in the natural gas transforms into chemical energy in the water. Then some of the chemical energy changes into kinetic energy when steam leaves the kettle and into sound energy when the water boils.

A dog is an omnivore. What would you expect a dog's diet to consist of?

• Meat

• Vegetables

• Both meat and vegetables

• Neither meat nor vegetables

The Earth is tilted at an angle of 23.5º relative to its position to the Sun.

The tilting of the Earth on its axis contributes to:

• The different phases of the moon we see

• The changing of seasons

• High and low ocean tides

• An increase in the gravitational force from the Sun

Mrs. Taylor's class created four mixtures with eight different substances. After mixing two of the substances in each beaker, the class recorded their observations in the chart. In which beakers did a chemical reaction most likely occur?

• 1 and 2

• 2 and 3

• 2, 3, and 4

• 1, 3, and 4

What most likely happened to the dead plants and animals?

• They were eaten by scavengers.

• They were washed away by water.

• They became fossil fuels.

• They became an underground aquifer.