Mid-term Science Review

​Let's Review for Midterm!

By Wendi Slone

Labelling

Label the parts of an atom.

Drag labels to their correct position on the image

Proton

Electron Orbit

Electron

Nucleus

Neutron

Multiple Choice

What is the net force?

• 40 N left
• 0 N Balalnced
• 400 N right
• 40 N right

Multiple Choice

What is the net force?

• 400 N Up
• 400 N Down
• - 400 N Down
• 800 N Down

Multiple Choice

Which of the following is an example of an unbalanced force?

Multiple Choice

How will this object move? 

• It won't move. 
• It will move to the right. 
• It will move to the left. 
• It will move up. 

Multiple Choice

Evidence of an animal or plant that lived a long time ago on Earth is called a ________.

• fossil

• tiger

• extinct

• endangered

Multiple Choice

There have been _____ mass extinction events in Earth's history.

• 3
• 4
• 5
• 2

Multiple Choice

What might be a good candidate for planned extinction?

• A plant

• An animal

• A fungus

• A virus

Multiple Choice

A person is bitten by a venomous snake, and there is no antivenin for this species. What do you do?

• Give them a random antivenin and hope for the best.

• Give them the antivenin of the closest relative.

• Suck out the poison--it works in movies, right?

• Develop a new antivenin on the spot. You have time...

Multiple Choice

Humans, birds, whales, and lizards all have similar arm bones. What is the reason for this?

• The function of these bones is the same in all animals
• They live in similar environments
• They have a common ancestor
• All organisms resemble humans

Multiple Choice

Bird wings and butterfly wings are an example of

• Homologous structure
• Analogous structure
• Mimicry
• Camoflague

Multiple Choice

Shark fins and dolphin fins are examples of analogous structures.

• True
• False

Multiple Choice

Some organisms that share a common ancestor have features that have different functions, but similar structures.  These are known as

• vestigial structures
• analogous structures
• homologous structures
• fossil structures

Multiple Choice

• Homologous
• Vestigial
• Analogous

Multiple Choice

• Homologous
• Vestigial
• Analogous

Multiple Choice

Do you think these organisms share a common ancestor?

• Yes, they share a common ancestor.

• No, they do not share a common ancestor.

• It is not possible to determine from the given information.

Multiple Choice

Explain the difference between Homologous Structures and Analogous Structures. Look up the difference between Homologous Structures and Analogous Structures. Then state what examples on the previous pages represent Analogous structures and Homologous structures below.

• Homologous structures have a common evolutionary origin, whereas analogous structures have a similar function but different evolutionary origins.

• Analogous structures have a common evolutionary origin, whereas homologous structures have a similar function but different evolutionary origins.

• Both homologous and analogous structures have a common evolutionary origin.

• Neither homologous nor analogous structures have a common evolutionary origin.

Multiple Choice

This is a signal that fluctuates exactly like the original signal.

• Analog

• Digital

• High Definition

• Binary

Multiple Choice

This is a signal where the data is represented by binary digits.

• Digital

• Analog

• NTSC

• CRT

Multiple Choice

The signal above is an example of a(n)

• Digital Signal
• Analog Signal

Multiple Choice

Smooth and continuous data

• analog
• digital
• pulse
• binary

Multiple Choice

The picture shows an example of what kind of signal?

• Analog

• Digital

Multiple Choice

Morse code is a type of _____________ signal.

• digital
• analog

Multiple Choice

Why are digital signals more reliable in transmitting information than analog signals? 

• They are more powerful
• They carry less information
• They have less interference over long distances
• They have more interference over long distances

Multiple Choice

An analog signal is...

• continuous
• in pulses

Multiple Choice

Identify a disadvantage of an analog signal:

• Requires low power

• Doesn't get interference

• When copied, quality goes down

• Hardware is usually small

Multiple Choice

What is true about a digital signal?

• They are easily distorted or affected by interference
• They take up more space
• They require more information
• They are generally considered more reliable

Multiple Choice

Which of the following is an advantage of analog signals

• Less prone to interference

• Requires less power

• Travels Farther

• Can carry more detailed information

Multiple Choice

The oldest layer of rock is layer _________________, and the youngest layer of rock is layer ____________________.

• 1; 5

• 2;4

• 3;2

• 4;3

Multiple Choice

Which letter shows the youngest layer

• A

• B

• C

• D

• E

Multiple Choice

Which letter shows the oldest layer?

• C

• D

• E

• F

• G

Multiple Choice

Which layer is the intrusion layer?

• A

• B

• C

• D

• E

Multiple Choice

Which letter shows the cross-section fault line?

• C

• D

• E

• F

• G

Multiple Choice

Which layer shows a trace fossil?

• Layer D

• Layer F

• Layer B

Multiple Choice

The diagram shows layers of sedimentary rock. Assuming that this rock formation is undisturbed, What is the relative age of layer C?

• It is the youngest rock layer.

• It is the oldest rock layer.

• It is older than B and younger than D.

• It is younger than B and older than D.

Multiple Choice

How do scientist know when a mass extinction took place?

• They find more fossils of plants.

• They find fossils of animals that died suddenly.

• They find a sudden disappearance of many fossil species.

• They find evidence of changes in Earth’s atmosphere.

Multiple Choice

Fusion produces ____ nuclei.

• same-sized
• smaller
• larger
• all of the above

Multiple Choice

an atom that has a different number of neutrons than protons is called?

• valence electron
• isotope
• different element
• ion

Multiple Choice

Where does fusion occur?

• On the Sun and stars

• underwater

• all around us

• nuclear power plant

Multiple Choice

How do stars generate energy?

• Fusion of hydrogen and helium atoms in the core

• Energetic explosions on the surface of the star

• Subduction of lithospheric plates

• Convection currents within the star

Multiple Choice

What is this called?

• refraction
• reflection
• reconstroction
• retraction

Multiple Choice

The bigger the amplitude, the ________ energy carried by the wave.

• more

• less

Multiple Choice

What does the nucleus of an atom contain?

• Electrons and neutrons
• Protons and neutrons
• Neutrinos and positrons
• DNA and RN

Multiple Choice

 What is the mass number of this element?

• 5
• 27
• 32
• 59

Multiple Choice

Which subatomic particle has a negative charge?

• proton

• neutron

• electron

Multiple Choice

What does the nucleus consist of?

• Protons + Electrons
• Neutrons + Electrons
• Atoms
• Protons + Neutrons

Multiple Choice

An atoms overall charge is 

• positive 
• depends on its mood 
• neutral 
• negative 

Multiple Choice

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

• negatrons

• electrons

• neutrons

• protons

Multiple Choice

A particle that moves around the nucleus is a(n)...

• Proton
• Neutron
• Electron
• Quark

Multiple Choice

What types of forces are responsible for revolution of electrons around the nucleus of an atom? 

• Gravitational forces of attraction

• Contact forces

• Electrostatic forces of attraction

• Magnetic forces

Multiple Choice

What is the net charge on the nucleus of an atom?

• Negative

• Positive

• Neutral

Multiple Choice

What is the reason of positive charge on the nucleus of an atom?

• presence of neutrons

• pressence of protons

Multiple Choice

What is building block of Matter?

• Bricks

• Cells

• Atoms

Multiple Choice

In a neutral atom, what is the number of protons equal to?

• the number of electrons
• the number of neutrons
• the number of molecules
• the number of nuclei