Worksheets2015 Science STAAR Released pt. 1
Total questions: 14
Worksheet time: 8mins
Name
Class
Date
1.
A dryer dries clothes primarily by converting —
a)
electrical energy to heat and mechanical energy
b)
mechanical energy to heat and electrical energy
c)
electrical energy to heat and light
d)
mechanical energy to heat and vaporization
2.
Which list of characteristics describes organisms classified as animals?
a)
Unicellular, prokaryotic, autotrophic
b)
Multicellular, eukaryotic, heterotrophic
c)
Unicellular, eukaryotic, heterotrophic
d)
Multicellular, eukaryotic, autotrophic
3.
An athlete is trying to lift some weights. He successfully lifts 200 N weights, but when he tries to lift 400 N weights, he is unsuccessful.
Which of these correctly compares the amount of work the athlete does on the weights?
Which of these correctly compares the amount of work the athlete does on the weights?
a)
The athlete does no work on either the 200 N weights or the 400 N weights.
b)
The athlete does no work on the 200 N weights but does work on the 400 N weights.
c)
The athlete does work on both the 200 N weights and the 400 N weights
d)
The athlete does work on the 200 N weights but does no work on the 400 N weights
4.
The main function of this human body system is to —
a)
sense odors in the environment
b)
exchange gases with the environment
c)
chew food as it enters the mouth
d)
trap particles that enter the nose
5.
What phase would come immediately after this phase?
a)
Waxing crescent
b)
Waxing gibbous
c)
Waning crescent
d)
Waning gibbous
6.
Based on the diagram, which of the following statements is valid?
a)
Owls are predators of bats, and bats are predators of moths.
b)
Beetles compete with bats and cave spiders.
c)
Snakes prey on bats and owls.
d)
None of the above
7.
Coal contains carbon and other elements. Carbon dioxide forms when coal burns in the presence of oxygen. Which of these is the best evidence that a chemical reaction occurs when coal burns?
a)
The shape of the coal changes.
b)
Oxygen is present.
c)
A new substance is produced.
d)
Coal is made up of more than one element.
8.
What should the student do in order to best model the cause of the day-and-night cycle?
a)
Spin the ball in different directions
b)
Tilt the ball while it is spinning
c)
Paint one half of the ball black and the other half white
d)
Shine a bright light on one side of the ball
9.
The atoms of a certain element each contain 11 protons and 1 valence electron. Which statement correctly identifies this element and describes its chemical reactivity?
a)
The element is sodium, and it is highly reactive.
b)
The element is fluorine, and it is not very reactive.
c)
The element is sodium, and it is not very reactive.
d)
The element is fluorine, and it is highly reactive.
10.
A bus travels 20 km in 30 minutes. What is the average speed of the bus?
a)
20 km/h
b)
30 km/h
c)
40 km/h
d)
50 km/h
11.
Why are there significantly more thunderstorms in Florida than in California?
a)
The state of Florida is smaller than the state of California.
b)
The air in Florida is more stable than the air in California.
c)
The air above Florida holds less moisture than the air above California.
d)
The ocean currents near Florida are warmer than the ocean currents near California.
12.
Which of these best explains why the coin fell straight down into the cup instead of remaining on the index card?
a)
The coin was at rest until the card was removed, so it tended to remain in the same location. Once the card was gone, the unbalanced force of gravity caused the coin to fall.
b)
Moving the card applied an action force on the coin. Since the card was gone, gravity applied a reaction force on the coin.
c)
The card had less mass than the coin, so a smaller force of gravity acted on the card. The larger force of gravity on the coin made it fall.
d)
The acceleration of the coin falling into the cup was equal and opposite to the acceleration of the card.
13.
Which unknown substance is most likely carbon?
a)
Substance 1
b)
Substance 2
c)
Substance 3
d)
Substance 4
14.
Which of these human activities is most likely to cause the excessive growth of phytoplankton in the world’s oceans?
a)
The use of chemical fertilizers that are carried by runoff into rivers
b)
The logging of old-growth forests, which results in erosion
c)
The spraying of chemical herbicides that reduce Carbon dioxide in the air
d)
The mining of fossil fuels, which requires digging underground tunnels
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