Science STAAR Bootcamp #1

Front

Which two objects are most likely less dense than water?
∎Plastic ball
∎Glass Marble
∎Metal paper clip
∎Wood block

Back

Wood block and plastic ball

Front

Which of the following explains a useful method for removing some objects that blow into a swimming pool or that are dropped into the pool by swimmers, including foam cups, keys, and coins?

Back

The foam cups are less dense than water, so they can be removed from the surfase with a pool cleaning net.

Front

Which of these is not soluble in water? Oil, Salt, Honey, Sugar

Back

Oil

Front

A teacher mixes white powder into a beaker of water. The powder cannot be seen in the water. The teacher then heats the mixture until the water evaporates and the powder can be seen again. Which property of the powder is the teacher demonstrating?

Back

Solubility

Front

What should a student do to most easily separate a mixture of equal amounts of salt and pepper with grains of the same size? Options: Use a pair of tweezers to remove each grain of pepper, Run a small magnet through the mixture to attract the pepper, Put the mixture in water and filter the pepper out of the water, Use a strainer with a fine wire screen to remove the pepper

Back

Put the mixture in water and filter the pepper out of the water

Front

Daniella is handed a solid, silver-colored metal object that conducts thermal energy and is NOT attracted to a magnet. This object is most likely made from-

Back

Aluminum

Front

Which explains why the fork looks different under water?

Back

light is refracted at an angle

Front

Which of the following is a good conductor of electricity? glass rod, cotton string, plastic tubing, copper penny

Back

copper penny

Front

Which of these best demonstrates the reflection of light? Looking through the glass of a large window, Looking at an image formed on a silver spoon, Looking at a lightbulb that is glowing, Looking at a star on a clear night

Back

Looking at an image formed on a silver spoon

Front

In which other situation does light bend?
When light travels through air into a prism, it bends and separates into many colors.

Back

When light moves through air into water