6th Grade Semester 1 Review

Elements & Compounds

Phys. Prop. of Matter

Energy

Heat Transfer

Forces, Motion, & Speed

100

Which of these is a compound?

A. H₂

B. Na

C. O₃

D. NaCl

100

Which of these elements is a nonmetal?

A. Sulfur (S)

B. Copper (Cu)

C. Iron (Fe)

D. Aluminum (Al)

A. Sulfur (S)

100

Which point on the coaster has the greatest potential energy?

A. Point A

B. Point B

C. Point C

D. Point D

A. Point A

100

The metal handle of a pot heated on a stove becomes hot after a period of time. Which process causes the handle to become hot?

A. conduction

B. convection

C. radiation

D. combustion

A. conduction

100

Which direction will the rope move?

A. to the right because the forces are balanced

B. to the left because the forces are balanced

C. to the right because the forces are unbalanced

D. to the left because the forces are unbalanced

200

The diagram illustrates the formation of Sodium Chloride from the elements – Sodium and Chlorine. This new substance is a -

A. compound

B. element

C. mixture

D. solution

A. compound

200

What is the density of a rock that has a mass of 35 grams and a volume of 7.0 g/mL?

A. 20 g/ml

B. 5 g/ml

C. 42 g/ml

D. 28 g/ml

B. 5 g/ml

200

Which statement best describes the energy changes that occur while a child is riding on a sled down a steep, snow-covered hill?

A. Both potential and kinetic energy increase

B. Kinetic energy decreases as potential energy increases

C. Kinetic energy increases and potential energy decreases

D. Both potential and kinetic energy decrease

C. Kinetic energy increases and potential energy decreases

200

The diagram shows the transfer of heat by -

A. convection currents

B. conduction

C. radiation

D. combustion currents

A. convection currents

200

In softball, first base is 60 feet from second base. If a runner travels from first base to second base in 3 seconds, what is her average speed in feet per second?

A. 20 feet/sec

B. 120 feet/sec

C. 90 feet/sec

D. 60 feet/sec

A. 20 feet/sec

300

Every chemical change results in -

A. color change

B. formation of a precipitate

C. the formation of new substance

D. change in temperature

C. the formation of new substance

300

Copper is often used to make electrical wiring. What property of copper is the MOST important property for its use in wiring?

A. ductile

B. malleable

C. shiny luster

D. brittle

A. ductile

300

The main parts of a working clothes dryer are shown in the diagram.

The appliance dries clothes primarily by converting energy from -

A. electrical energy to thermal and mechanical energy

B. mechanical energy to thermal and solar energy

C. mechanical energy to thermal and electrical energy

D. electrical energy to heat and light energy

A. electrical energy to thermal and mechanical energy

300

If there is a temperature difference in a system, heat will always -

A. move from lower to higher temperatures.

B. move from higher to lower temperatures.

C. increase in the system.

D. build up until an explosion releases energy.

B. move from higher to lower temperatures.

300

Clarissa collected data on speed while walking her dog. What happened between seconds 2 and 3?

A. the dog stood still

B. the dog sped up

C. the dog walked two feet

D. the dog slowed down

A. the dog stood still

400

A scientist spilled a few drops of dilute hydrochloric acid (HCl) on a lab table. The scientist then sprinkled some baking soda (NaHCO₃) onto the spill for safety purposes. Which observation would provide the best evidence that a chemical reaction occurred?

A. Some of the baking soda dissolved in the hydrocholoric acid.

B. The baking soda and hydrochloric acid combined and bubbles formed.

C. The hydrochloric acid evaporated, leaving only the baking soda.

D. The baking soda absorbed the hydrochloric acid.

B. The baking soda and hydrochloric acid combined and bubbles formed.

400

A nugget of an unknown element was found by a student during a geology trip. Once cleaned, the nugget was shiny, malleable and conducted electricity. This element should be classified as a -

A. metalloid

B. metal

C. non-metal

D. compound

B. metal

400

A firefighter climbs a ladder on the side of a building. This provides an increase in the firefighter's -

A. kinetic energy

B. electromagnetic energy

C. potential energy

D. mass

C. potential energy

400

Elaine investigated how well different materials conducted heat. She had samples of metal, wood, plastic, and rubber that were each the same size. Elaine put each sample in boiling water for five minutes and then measured its temperature. She put her results in the table.

Heat Investigation

Material Temperature(°C)

Metal 36

Wood 31

Plastic 27

Rubber 30

Based on the data, which material is the best conductor of heat?

A. metal

B. wood

C. plastic

D. rubber

A. metal

400

An airplane takes off at 4:00 p.m. and lands at an airport 820 kilometers away at 6:00 p.m. What was the average speed of the airplane?

A. 410 km/hr

B. 1640 km/hr

C. 360 km/hr

D. 720 km/hr

A. 410 km/hr

500

Mr. Flores wants to demonstrate a chemical change to his students. Which of the following should he choose?

A. melt an ice cube

B. measure the density of a rock

C. fill a balloon with helium

D. burn a piece of paper

500

The masses and volumes of four cubes are shown.

Which cube has the highest density?

A. Cube 1

B. Cube 2

C. Cube 3

D. Cube 4

C. Cube 3

500

Throughout our homes, we use a variety of devices which require energy. The source of energy used varies depending on the device. Which of the following most likely gets its energy from a chemical source?

A. lamp used on a desktop

B. toaster used in the kitchen

C. ceiling fan used in the bedroom

D. a battery-powered flashlight used in the garage

500

The diagram above shows an experimental investigation on the movement of thermal energy by conduction. If the heat source were turned off, what would happen to the temperature of the rod?

A. Heat would continue to move from areas of the rod that are cooler to areas of the rod that are warmer until the entire rod is the same.

B. There would be no further movement of heat.

C. There is no way to predict how the heat would move through the rod.

D. Heat would continue to move from areas of the rod that are warmer to areas of the rod that are cooler until the entire rod is the same temperature.

500

A bicycle club went on a six hour bike ride. The graph shows the number of hours and the distance traveled. At the end of the six hour ride, the average speed of the bicyclists was approximately -

A. 50 miles/hr

B. 6 miles/hr

C. 8 miles/hr

D. 7 miles/hr

C. 8 miles/hr