STAAR Prep

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 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

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 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

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

How are organisms, such as snakes, cacti and coyotes able to survive in harsh desert conditions?

• Over thousands of years these organisms have developed adaptations to survive in arid climates

• These organisms migrate out of the desert during the summer months

• These organisms work together to find sources of food and water

• Snakes, cacti and coyotes are all aquatic species that live in ponds and rivers during the hot day

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

Which of these is considered a non-renewable resource?

• Glass

• Wood

• Cattle

• Soil

A student is working on a science project and is going through each step of the scientific method. After the student conducts his or her first experiment and records the results of the experimental test, what should the student do next?

• communicate the results

• Draw a conclusion

• Repeat the experiment

• Create a hypothesis