Science STAAR 2024

• a main-sequence star in spectral class B 
• a supergiant in spectral class K
• a main-sequence star in spectral class K or M 
• a white dwarf in spectral class B 

Tags

NGSS.HS-ESS1-3

With the use of the Hubble Space Telescope, scientists recently discovered a giant runaway star. It is 90 times larger than the sun and is very hot and blue-white in color. Why does the sun appear to be brighter than this runaway star when viewed from Earth? 

• The sun is a different color than the runaway star.

• The sun is older than the runaway star. 

• The sun is closer to Earth than the runaway star. 

• The sun is made of different elements than the runaway star. 

In July 1994 the comet Shoemaker-Levy 9 collided with the planet Jupiter, as scientists had predicted. To be able to accurately predict when a comet will collide with a planet, it is essential to understand — 

• the composition of a planet’s atmosphere 

• the gravitational attraction that exists between all bodies 

• the attraction of opposite poles of a magnet to each other

• the formation of comets 

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

All living things require oxygen to survive. Where on the periodic table above would you find gases like oxygen?

• section A 

• section B 

• section C 

• section D 

Tags

NGSS.MS-PS1-1

Some elements have properties of metals and nonmetals, which make them useful in electronic devices. Where can these elements be found? 

• section A 

• section B

• section C

• section D 

Tags

NGSS.MS-PS1-1

Transition metals are malleable and are found in section B. What is another property of metals in section B?

• conducts heat
  

• liquid state of matter
  

• highly reactive and never found as a pure element 

• poor conductors of electricity 

How many different elements are involved in this reaction? 

• two 

• three 

• four

• five

Tags

NGSS.MS-PS1-1

CH₄ +2O₂  →  CO₂ +2H₂O
How many atoms of hydrogen are involved in this reaction? Record you answer below. 

• 6

• 10

• 4

• 2

Tags

NGSS.MS-PS1-1

Which of the following would be examples of a Climax Community species?

• Lichen & Moss

• Large Trees

• Flowers and Grasses

• Shrubs & small trees

Tags

NGSS.MS-LS2-4

In this food web the Ant would classifiy as which of the following?

• Herbivore

• Carnivore

• Omnivore

• Producer

Tags

NGSS.MS-LS2-2