In class, a teacher places a balloon filled with baking soda over a flask filled with vinegar. When the powder falls into the flask and combines with the vinegar, the balloon inflates (fills up with air). What evidence is there that a chemical change occurs?

Check all of the words that may indicate a Physical Change:

Choose all of the words that may indicate a chemical change has occurred.

A balance and a graduated cylinder are used to determine the density of a mineral sample. The sample has a mass of 14.7 g and a volume 2.2 cm3. What is the density of the mineral sample?

Which statement does NOT correctly compare silicon with element?

a bicycle rider is traveling up a hill. When the rider reaches the top of the hill, she stops to rest. Then she travels down the hill. The diagram shows the rider in the three different positions. Which of these correctly describes the potential energy and the kinetic energy of the bicycle rider?

If the graduated cylinder had 10 mL of water before a marble was placed in it, what is the volume of the marble?

If a substance had a mass of 27g and a volume of 10mL, which substance could it be?

A renewable source of energy produced from the natural movement of water.

Heat transferred from beneath the surface of Earth and used to produce energy for human use.

An energy resource such as trees or wind that is replaceable by natural means.

A natural non-renewable fuel such as coal, oil or natural gas, formed over a very long time in the geological past from the remains of living organisms.

An energy resource that takes million of years to form from the remains of plants and animals, such as coal, oil and natural gas.

Effort to wisely use, distribute and protect valuable resources such as fresh water, soil, unique environments and energy resources.

The energy related to the motion of an object is called —

According to the above diagram, at what point would the roller coaster car have the greatest potential energy?

A rock that falls off a cliff represents both potential and kinetic energy. Which statement best represents the energy transformation involved in this scenario?

The diagram represents two students pushing and pulling an object in the same direction. Which statement best describes the result of the forces?

During an investigation, students placed a toy car at the top of a ramp and recorded the distance and time at different intervals. The graph below is a record of their data. What is the average speed of the toy car in the investigation?

A student used a wind-up toy to determine the distance the toy could travel in 10 seconds. At one point, the toy stopped and the student had to rewind it.

At what time interval was the toy stopped?

A student who is feeling cold briskly rubs her hands on her bare arms. What energy transformation is the student using to feel warmer?

Which object works by changing chemical energy to mechanical energy?

The energy contained in the nucleus of atoms. _______________energy.

When a battery is used to light a flashlight, like the one pictured below, what energy transformation occurs?

boundary between two tectonic plates that are moving away from each other

a tectonic plate boundary where two plates collide, come together, or crash into each other

a plate boundary where two plates move past each other in opposite directions

Is there a pattern to the locations of earthquakes and volcanoes around the globe?

The Ring of Fire is an area where a large number of earthquakes and volcanic eruptions occur. What claim can be made about the Ring of Fire from this information?

In what layers does heat circulate and help drive tectonic plate movments?

True or False? Minerals are the building blocks of rocks.

What determines the gravitational strength of an object?

What force attracts a body toward the center of another physical body having mass?

A basketball and a volleyball are roughly the same size but have different mass. In Science class, students conducted an experiment of what would happen if both were dropped from the roof of the school. What do you think the students saw?

Why do planets orbit the Sun?

Which of the following represents characteristics of the four planets closest to the Sun?

Scientists observed a rocky, rotating object orbiting in space. It was 250 km wide. The rocky object was located several times farther away from the Sun than the Earth. The object is most likely —

According to the Mass of Planets table below, on which planet would a person weigh the least?

A scientist is trying to decide whether an organism is unicellular or multicellular. Which information would help the scientist most to make her decision?

What is the smallest and most basic unit of life?

A scientist found some weird slime near a pond. What would he need to do to determine if some part of the slime were a living thing?

Plants & animals have some things in common. Like all living things, one of the things they have in common is

Which is true?

What type of cell is this?

What type of cell is this?

What do prokaryotic cells & eukaryotic cells have in common?

What identifies this cell as eukaryotic?

Which kingdoms have some organisms that can make their own food (autotrophic)?

Which of the following kingdoms includes organisms that are single-celled eukaryotes that can be either heterotrophic or autotrophic?

An organism that is multicellular, reproduces sexually, and makes its own food (autotrophic) is classified into which taxonomic kingdom?

All living things or organisms in an ecosystem are

Temperature, light, air, water, and soil are all _____ parts of the environment

What is the difference between the biotic

and abiotic factors?

A hollow, sealed glass sphere contains sand, water, air, algae, and tiny brine shrimp. The sphere is a model ecosystem. Which of these is a biotic factor of this ecosystem?

What terms should replace X and Y in the table?