Previous Science in Action Videos

see all videos »
  • drought, water, pacific institutute, agriculture, irrigation, conservation

    Water Use: Drought and Beyond

  • CitizenScience

    Citizen Science at the Academy

  • Academy research, Ants, beetles, francisco, life, luiz rocha, nudibranchs, paco hita garcia, researchers, Science Today, sea fan, sharks, vaness knutson

    Describing New Species

Science Today Quiz

What is the force that rips a star apart as it approaches a black hole?

  • Weak force
  • Tidal force
  • Strong force
  • Electromagnetic force

206

Correct!

The tidal force is an effect of gravity, one of the four fundamental forces in nature—namely, the strong force, weak force, electromagnetic force, and gravity. Read more about the dangerous nature of black holes here.

Bummer!

The tidal force is an effect of gravity, one of the four fundamental forces in nature—namely, the strong force, weak force, electromagnetic force, and gravity. Read more about the dangerous nature of black holes here.

502
1480
206

What percent of Mercury’s radius is part of its core?

  • 27%
  • 55%
  • 85%
  • 73%

204

Yes!

NASA’s MESSENGER spacecraft measured variations in Mercury’s gravitational pull to reveal that its core is larger than originally expected. Find out more here!

Sorry.

85%. NASA’s MESSENGER spacecraft measured variations in Mercury’s gravitational pull to reveal that its core is larger than originally expected. Find out more here!

507
1353
204

Dark matter is made up of:

  • Weakly interacting massive particles (WIMPs)
  • Brown dwarfs
  • Antimatter
  • We don’t know

203

That’s right!

We have no idea! Mysterious dark matter makes up most of the mass of the Universe. It sounds imaginary, but we know it exists because it influences us through the effect of gravity. Read more here.

Oops!

We have no idea! Mysterious dark matter makes up most of the mass of the Universe. It sounds imaginary, but we know it exists because it influences us through the effect of gravity. Read more here.

854
1376
203

What do Vesta and the moon have in common?

  • Astronomers have found proof that both were impacted with asteroids
  • Both have gone through planetary development
  • Both have an iron core
  • All of the above

207

Correct!

Learn more here.

Bummer!

All of the above. Learn more here.

736
1157
207

What would happen to earth if the Sun emitted a superflare?

  • Damage the ozone layer
  • Kill off species
  • Visible change in sunlight
  • All of the above

205

Nice work!

Superflares occur when a star has a magnetic outburst, releasing a burst of charged particles. Such events take place rarely on most stars, and probably even less often on our Sun. Check it out!

Nope.

All of the above. Superflares occur when a star has a magnetic outburst, releasing a burst of charged particles. Such events take place rarely on most stars, and probably even less often on our Sun. Check it out!

You got out of correct. The average so far is .

1141
1539
205
205
1398082039_9j5r3bbdt2n59py
31

About Science Today

Science Today is the California Academy of Sciences’ channel for current stories on cutting-edge technologies, life, Earth, space and sustainability. Content is produced in-house and is distributed throughout the museum, on the internet and through various partners. Please share your comments on what you find important in the changing world of science.

 

Articles by Tag

Loading...
Loading...
  • No tweets found.