Review

A Crushing aluminum cans to make them smaller

B Only buying beverages sold in aluminum cans

C Rinsing our aluminum cans before throwing them out

D Putting used aluminum cans in the recycling bin

Students can conserve aluminum, an important resource, by doing which of the following?

D

A 1982

B 1985

C 1994

D 1999

Batteries made before 1997 contain high levels of the toxic substance mercury. These batteries can’t be recycled and should not be thrown in the regular trash, while newer batteries are safe for both. An old battery would be safe for regular disposal or recycling if it were made in which of the following years?

D

A Brand A

B Brand B

C Brand C

D Brand D

Students gathered data on several brands of paper towels. They put all the data in a table. Students are deciding which brand of paper towels to use in their science lab. They want to choose the brand that uses the highest percentage of post-consumer recycled paper. Which brand should they choose?

B

A How does the water retention of a soil affect its ability to support plant life?

B What nutrients does a corn plant need to absorb from soil in order to grow?

C How do the different parts of a plant get the water they need from the soil?

D What kind of climate has conditions that create the best soil for plant growth?

Which of the following questions could be investigated by growing corn plants is soils that retain different amounts

of water?

A

A Thermometer and hot plate

B Hot plate and stop watch

C Goggles and thermometer

D Stop watch and thermometer

Which tools would be necessary to make the measurements needed in an investigation of the effect of temperature on the time it takes to dissolve

salt in water?

D

A Warmer conditions help bacteria to grow.

B

The growth of bacteria can prevent cloud formation.

C

Bacterial growth is greater when there is flooding.

D

Many plants depend on bacteria to develop.

Scientist collected data on rainfall in Houston over a five month period. They also collected data on the levels of bacteria found in bayous and rivers in Houston over the same period. What conclusion could reasonably be drawn

from these data?

C

Students are conducting an investigation in which they need to measure the mass of a beaker of a certain liquid. They place a glass beaker of the solution on a triple-beam balance. The students know the mass

of the beaker is 125 grams. What is the mass of the liquid?

A 35 grams

B 125 grams

C 210 grams

D 335 grams

C

A Monthly average rainfall in inches for Dallas, Texas each month for an entire year

B The portions of all the trash collected on a beach in different categories; paper, plastic, aluminum, etc.

C The time and distance data for a rocket after it is launched and moves through the air

D The relationship between the number of flies a frog eats and the number of eggs it lays

Which of the following data is most appropriately displayed on a pie chart?

B

A Number of frogs/outside temperature

B Volume of frog noise/number of frogs

C

Temperature of water/temperature of air

D

Frog calls per hour/outside temperature

Students want to investigate if there is a relationship between the temperature by the school pond and how often the frogs in the pond make noise. For this investigation they will have a data table with what headings?

D

A August is also very hot in Houston.

B

Australia is hot in December and cold in July.

C Earth rotates on its axis every 24 hours.

D Summers are also usually more humid.

When asked to explain why summers are hot in the United States while winters are colder, one student says that it is because the Earth is closer to the Sun in July than in December. Which of the following pieces of evidence

indicates that this explanation might be wrong?

B

A which city had the highest annual rain fall

B the city that was the coldest in December

C which city had the nicest climate overall

D the average number of snowy days for all the cities

By collecting weather data for four cities in the United States over an entire year, a scientist could collect the evidence necessary to determine

all of the following EXCEPT –

C

A Dispensing cans at the bottom

B Keeping sodas cold

C Determining change given

D Allowing selection by buttons

A soda machine is shown here with features labeled. Which function of the soda machine depends on the force of gravity?

A

A mass

B diameter

C shape

D thickness

Many vending machines can tell the difference between a penny, a nickel, a dime and a quarter. The device inside these machines that determines the value of the coin could be designed to distinguish between these coins based

on any of the following EXCEPT -

C

A be very difficult to clean

B

cost more to make than other kinds

C contain little or no iron

D be lighter and more flexible

Many refrigerators have doors to which magnets stick. Some refrigerators have stainless steel doors. No magnets stick to these doors. What conclusion

can be drawn about these refrigerator doors? The doors must -

C

The parts of a flashlight are shown here in the off and on positions. The flashlight will not function as shown unless the switch is –

A made entirely of nonmagnetic plastic

B

able to produce heat when connected to a battery

C

attached to something that conducts electricity

D

brightly colored to make it easy to see in the dark

C

A A meter stick

B A two-pan balance

C A hot plate

D A graduated cylinder

Which tool is generally used to compare the masses of objects?

B

A balance

B thermometer

C spring scale

D graduated cylinder

The proper tool for measuring the volume of a liquid is a –

D

Students measured out a certain volume of water into a graduated cylinder.

Next they placed a rock in the water and observed the graduated cylinder.

Next they placed a rock in the water and observed the increase in volume?

5

A Distance a car that traveled for thirty minutes

B Appearance of leaves on a tree at different seasons

C Texture of soil samples collected in the desert

D How microorganisms move about in pond water

Which of the following observations would be best recorded using a camera?

B

What picture shows reflection, refraction, absorbing, and transmitting?

Transmitting

Absorbing

Reflection

Refraction

List the 5 types of Energy-

• Thermal

• Electrical

• Light

• Mechanical

• Sound

• Heat

• Something that has to be plugged in

• Solar Energy

• A Bike or a can opener

• I pods or radio

Boiling Point-

Celsius Fahrenheit

100° 212 °

Freezing Point-

Celsius Fahrenheit

0° 32 °

When does melting began?

A 0° CB 100°F C 32° C

D 33°F

D

Guess it..

• When water vapor turns into liquid water Condensation

• When liquid water slowly dries up and turns into water vapor Evaporation

• When ice turns into liquid water Melting

Force

• Force that slows or stops motion… happens when things are rubbed together

Friction

• Property of an object that resists movement by force Inertia

• Force that pulls objects towards the center of earth Gravity

• Push or Pull of an object Force

What does it Cause…..

• Rotation causes…… 24 hours/ 1 day

• Rotates on a …. axis

• Revolution Causes …… 365 days/1 yr

orbits ….. Around the sun

What time of the day….

• Shadow in the East means….. It’s Afternoon

•

• Shadow in the west means….. It’s Morning

Measuring Tools

Temperature Thermometer

Precipitation Rain Gauge

Air pressure Barometer

Wind speed Anemometer

Steps to making a new Sedimentary Rock

• Weathering

• New sediment

• Erosion

• Deposition

• Compacting and Cementation

• NEW ROCK

3 types of fossil fuels

• Coal

• Oil

• Natural gasYou need these three things to create fossil fuels

1. Time2. Pressure3. Heat