Science L4 Blackholes and space

A blackhole has extremely high gravity that compresses all that enters it.

• True

• False

What is the edge of a blackhole called?

• Event horizon

• Event circumference

• Event space

When a ____ explodes it is called a ______.

• star, supernova

• planet, supernova

• star, nebula

• planet, nebula

If 2 blackholes were to collide, what would the result be?

• They would explode

• They would make one supermassive blackhole

• The one would consume the other

In a blackhole all matter moves to one point. What is the point called?

• Singularity

• Singular

• Singularness

Gravitational lensing acts like a ________ in space.

• magnifying glass

• measuring tool

• binoculars

How does gravitational lensing help scientists today when studying the universe?

• It helps see more galaxies

• It helps measure galaxies and star

• It helps count galaxies

A binary star is _______________.

• when 1 star is observed, but there are 2 stars present

• a star that orbits a dwarf planet

• a star that has an identical sister star

A nebula consists of ______________.

• gas , dust and particles

• gas and planets and stars

• many galaxies

The formation of a nebula can happen when ____________

• a star explodes

• a planet collides with another planet

• stars combine to make bigger stars