8TH GRADE SCIENCE STAAR REVIEW

Lakukan tugas rumah & ujian kamu dengan baik sekarang menggunakan Quizwiz!

How many Oxygen (O) atoms are in 2C2HO8Cl2

Answer: 16

If the mass number of this chlorine atom is 36, how many neutrons does it have?

Answer: 19

what group number are the noble gases

Answer: 19

How many aluminum atoms are in Al2(SO4)3?

Answer: 2

If an atom has 10 protons, 10 neutrons, and 10 electrons, what is the mass of the atom?

Answer: 20

Give an example of a contour interval

Answer: 20 m

A 20 kg bike accelerates at 10 m/s2. what was the force?

Answer: 200 Newtons

What is the mass number of the atom with 11 protons and 12 neutrons

Answer: 23

How many atoms are in the neurotransmitter serotonin? The formula for serotonin is C10H12N2O

Answer: 25

How many elements are in C6H12O6?

Answer: 3

How many molecules of Carbon are in the following formula? 3C2H6

Answer: 3

an atom with atomic number 6 would have how many protons

Answer: 6

NON-living things found in an ecosystem

Answer: Abiotic

Variety of life

Answer: Biodiversity

A rift valley occurs at a ____________ boundary.

Answer: Divergent

What law is best described by inertia?

Answer: First Law

What is Newton's Third Law?

Answer: For every action there is an equal and opposite reaction

What do contour lines that are farther apart represent?

Answer: Gentle Slope

The vertical (up and down) columns in the Periodic Table are called

Answer: Groups

What type of air pressure is present with a warm sunny day?

Answer: High

Blue stars are the _____________.

Answer: Hottest

Most stars are made of which elements?

Answer: Hydrogen and Helium

What type of air pressure is present with rain?

Answer: Low

Which category is our Sun located in?

Answer: Main Sequence

Which of the following list the correct order of the life cycle of massive stars?

Answer: Nebula --> protostar --> main sequence --> red supergiant --> supernova --> black hole

Particles in an atom that are neutral and have no charge are

Answer: Neutrons

Is the following equation balanced?...Al + O2 --> 2Al2O3

Answer: No

The horizontal (side to side) rows in the Periodic Table are called

Answer: Periods

Small consumers that are hunted and eaten by larger consumers

Answer: Prey

An organism that can make its own food

Answer: Producer

The substances listed on the right side of a chemical equation are the

Answer: Products

Earth's ________ on its axis causes day and night.

Answer: Rotation

What does the tilt of the earth cause?

Answer: Seasons

Acceleration of an object happens when things

Answer: Speed up, Slow down, or Change Direction.

What type of boundary occurs when two plates slide past each other?

Answer: Transform

When something has speed in a certain direction it is called...

Answer: Velocity

What Type of moon is this?

Answer: Waning crescent

Is the following equation balanced? 2C2H2 + 5O2 --> 4CO2 + 2H2O

Answer: Yes

Answer:Element or compound? H2O

Answer: compound

What are the final two stages of a medium mass star?

Answer: white dwarf - black dwarf

Our sun is currently in what star stage?

Answer:Main Sequence


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