Science STAAR

Which statement accurately describes a state of matter?

• Solids take the shape of their container

• Gases maintain a fixed shape

• Liquids will expand to fill the volume of a container

• Gases expand to fill an entire space

In a science experiment, a student is asked to identify the freezing and melting points of water. Which piece of laboratory equipment should be used?

• Triple Beam Balance

• Thermometer

• Ruler

• Graduated Cylinder

How are igneous rocks formed?

• Years of sediment are laid down on top of each other and forced together

• Acid rain caused by pollution creates holes in metamorphic rocks

• Dust and pebbles are pressed together underground from Earth's heat and pressure

• Magma from a volcanic eruption cools and hardens

Which of the following is the most likely food source for a carnivore?

• A plant

• The Sun

• An Animal

• A dead tree

Which of the following best describes the role of decomposers in an ecosystem?

• They produce their own food through photosynthesis.

• They consume other organisms for energy.

• They break down dead organisms and waste, returning nutrients to the soil.

• They are the primary consumers of plants.

Tags

NGSS.MS-LS2-3

What happens to the temperature of water as it goes from a solid to a liquid?

• It decreases

• It increases

• It stays the same

• It first increases, then decreases

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What does solubility refer to?

• The ability of a substance to dissolve in another substance.

• The temperature at which a liquid turns into a solid.

• The ability of a substance to react with oxygen.

• The temperature at which a solid turns into a liquid.

Which statement describes how fossil fuels are made?

• Oil from Earth's core slowly rises to the Earth's surface and forms ponds

• Lava within some volcanoes becomes so hot that it transforms into fossil fuels

• Dead and decomposing organisms are exposed to extreme heat and pressure transforms them into fossil fuels

• When mountains form on top of coal, the pressure liquefies the coal creating fossil fuels

Tags

NGSS.MS-ESS3-1

In a food chain, where does the energy go after the secondary consumer dies?

• Back to the sun

• To the producers

• Into air, becomes wind

• To decomposers

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

Tags

NGSS.MS-PS2-2