Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

All Bees 7th Grade > Science Bee > Flashcards

Science Bee Flashcards

1
Q

Who developed 300 uses for peanuts?

A

George Washington Carver.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is luminosity, and what does it measure for a star?

A

Luminosity measures the total amount of light energy radiated by a star from its surface.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Where did the astronauts of Apollo 11 land on the moon?

A

They landed in the Sea of Tranquility on the moon.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Which moon of Jupiter is known for its high volcanic activity?

A

Io, Jupiter’s innermost moon, is known for its high volcanic activity.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is emitted when a massive star collapses to form a black hole?

A

Gamma-ray bursts are emitted during the formation of a black hole.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is dark energy, and what percentage of the universe does it account for?

A

Dark energy is an unknown energy type that constitutes roughly 70% of the universe’s total matter.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

How many moons does Mars have, and what are their names?

A

Mars has two moons: Phobos and Deimos.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What are asteroids, and what do they orbit?

A

Asteroids are tiny, rocky objects that orbit the Sun.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is escape velocity, and what does it determine?

A

Escape velocity is the speed an object needs to leave the gravitational field of a celestial body.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Where is our Solar System located?

A

Our Solar System is located in the Milky Way galaxy.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What are stem cells, and what is their unique ability?

A

Stem cells can self-renew and develop into different types of cells within the body.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is the purpose of polymerase chain reaction (PCR)?

A

PCR is used to make rapid copies of DNA segments.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What disease is caused by Mycobacterium tuberculosis?

A

Tuberculosis is caused by Mycobacterium tuberculosis.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What disease is transmitted to humans via mosquitos and is caused by the Plasmodium protozoa?

A

Malaria is transmitted by mosquitos and caused by the Plasmodium protozoa.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What are pheromones, and how are they used?

A

Pheromones are chemicals used for communication between members of the same species.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What group do kangaroos, opossums, and wombats belong to?

A

They are all marsupials.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What is mitosis, and what does it yield?

A

Mitosis is cellular division that yields two identical daughter cells.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What produces blood cells in the body, and where is it located?

A

Bone marrow produces blood cells and is located in the center of bones.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What do “cold-blooded” animals rely on for body heat regulation?

A

“Cold-blooded” animals rely on their external environments for body heat regulation.

20
Q

What does taxonomy study and define?

A

Taxonomy is the study and classification of organisms.

21
Q

What is Australopithecus, and when did they live?

A

Australopithecus is a genus of early hominins who lived during the Pliocene and Early Pleistocene epochs.

22
Q

How do prokaryotes differ from eukaryotes?

A

Prokaryotes lack a nucleus and other membrane-bound organelles, unlike eukaryotes.

23
Q

What is the essential mineral needed for strong bones and teeth, and what element is it?

A

Calcium is an essential mineral, an alkaline Earth metal, needed for strong bones and teeth.

24
Q

What gas is produced by human and animal exhalation and is considered a greenhouse gas?

A

Carbon dioxide is a natural waste product and greenhouse gas.

25
Q

What is ozone, and where does it form naturally?

A

Ozone forms naturally in the stratosphere through the interaction of ultraviolet sunlight and molecular oxygen.

26
Q

What is the lightest solid and metal on the periodic table?

A

Lithium is the lightest solid and metal on the periodic table.

27
Q

What is a mixture, and can you provide examples?

A

A mixture is a physical combination of two or more pure substances. Examples include air and seawater.

28
Q

What are electrons, and where are they found in an atom?

A

Electrons are negatively-charged subatomic particles found in the outer shells of atoms.

29
Q

What are the two major elements that compose the Earth’s atmosphere, and their percentages?

A

Nitrogen (78%) and oxygen (21%) make up the Earth’s atmosphere.

30
Q

What problem does the traveling salesman problem address?

A

The traveling salesman problem finds the shortest route between a set of points that must be visited.

31
Q

How is the magnitude of an earthquake measured?

A

Seismologists use the Richter scale to measure earthquake magnitude.

32
Q

What causes upwelling in the ocean, and what does it result in?

A

Upwelling occurs when winds push surface water away from the shore, resulting in the rise of deep water to the surface.

33
Q

What is the polar vortex, and where does it encircle?

A

The polar vortex is an area of cold, low pressure air that encircles both of the Earth’s polar regions.

34
Q

What period does the Quaternary belong to, and when did it start?

A

The Quaternary is the last period of the Cenozoic Era, starting 2.58 million years ago.

35
Q

How does lake-effect snow form, and what conditions are necessary?

A

Lake-effect snow forms when cold air passes over a lake’s warmer waters, resulting in the formation of clouds and snow.

36
Q

What is factoring, and what does it involve?

A

Factoring involves expressing a number or polynomials into simpler terms.

37
Q

What is probability, and what does it assess?

A

Probability assesses the likeliness of an event happening.

38
Q

What is the Fibonacci Sequence, and how is it formed?

A

The Fibonacci Sequence is formed by adding the two preceding numbers.

39
Q

What is the SI unit of power, and what is it used to measure?

A

The watt is the SI unit of power, used to measure the rate of energy transfer.

40
Q

What type of simple machine is a seesaw, and how does it work?

A

A seesaw is an example of a lever, which consists of a beam and fulcrum.

41
Q

What is thermal radiation, and how does it occur?

A

Thermal radiation occurs when the energy from the motion of charged particles converts to radiation in the electromagnetic spectrum.

42
Q

What is inertia, and what does it refer to?

A

Inertia is the property of an object to resist changes in its motion.

43
Q

What force pulls objects toward the center of the Earth?

A

Gravity is the force that pulls objects toward the center of the Earth.

44
Q

What did Johannes Kepler publish, and what was it based on?

A

Johannes Kepler published The Rudolphine Tables, based on observational data by Tycho Brahe.

45
Q

Who was George Washington Carver, and what is he famous for?

A

George Washington Carver developed 300 uses for peanuts as an agricultural scientist.

46
Q

Who was Rosalind Franklin, and what did she contribute to science?

A

Rosalind Franklin made significant contributions to the understanding of DNA structure through X-ray crystallography.

47
Q

What was Nicolaus Copernicus’ influential publication, and what did it catalyze?

A

Copernicus’ On the Revolutions of the Heavenly Spheres catalyzed the Scientific Revolution.

All Bees 7th Grade (3 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions