Science DCA Review 2021

Science DCA Review

Test on 12/16/2021

TEK 4.5A: measure, compare, and contrast physical properties of matter including, mass, volume, states, temperature, magnetism, and the ability to sink or float.

Multiple Choice

A student is conducting a lab experiment in science class. She places two different size balls made from different materials into a beaker of water. Which of the following could the student test with this experiment?

• Mass

• Weight

• State of matter

• Ability to sink or float

Multiple Choice

Students have placed five balls into a tank of water. Which of the following is an accurate description of the results?

• As many balls floated as sank.

• More balls floated than sank.

• None of the balls sank.

• More balls sank than floated.

Multiple Choice

A student filled two containers with 50 mL of water and added 10 mg of sand to the first one and 10 mg of salt to the second. What is the difference between these two mixtures?

• Only Mixture 1 begins with a liquid and a solid.

• Only Mixture 2 can be separated with a magnet.

• In Mixture 1 only, the solid will float on the water.

• In Mixture 2 only, the properties of the solid change.

Multiple Choice

This energy is produced by electrons running through a substance that lights our homes, runs motors, and makes radios work.

• Light energy

• Sound energy

• Electrical energy

• Heat energy

Multiple Choice

Which of the following items would best conduct thermal energy?

• A pencil

• Copper wire

• Plastic fork

• A glass vase

Multiple Choice

Students hooked up a battery and bulb with wires as shown. For the bulb to light, the object the students place in the space between the two wires must be–

• a conductor of electricity.

• made of plastic or wood.

• at room temperature.

• an electrical insulator.

Multiple Choice

A car will skid more on a wet road than on a dry road. This happens because between the tires and the dry road, there is more —

• gravity

• magnetism

• friction

• heat

Multiple Choice

Which soil component has the following characteristics; becomes heavy and sticky when wet, easily waterlogged, and is the smallest particle of soil?

• pebbles

• sand

• silt

• clay

Multiple Choice

A student decides to plant a vegetable garden in his backyard. Which type of soil would be best for growing most vegetables?

• Packed, dry clay soil that can hold lots of water

• Dry, sandy soil that allows water to move easily through it

• Soil that is loose and rich in decaying leaves and black dirt

• Soil that contains mostly gravel

Multiple Choice

Rain falls on a rock and then freezes. Then it thaws. This process is repeated often for many years. Finally, the rock is split into several smaller pieces. What is this process called?

• Erosion

• Weathering

• Deposition

• None of the above

Multiple Choice

Dunes are large piles of sand that shift slowly around in deserts and on beaches. What causes the dune to move from place to place?

• Rushing rivers

• Blowing winds

• Freezing water

• Weathering rock