Worksheetsreview
Total questions: 15
Worksheet time: 10mins
Jesusa has a big collection of handcrafted earrings. She will transfer her earrings in her newly bought organizer. She grouped the earrings into colors and sizes. What science process was observed based on what Jesusa did?
Collecting
Classifying
Measuring
Observing
Jobert wanted to know which household substances would prevent the sliced apples from turning brown. He prepared five slices of apples. He applied household products (vinegar, oil, saltwater, and coffee) into four slices of apples and allowed one slice to be left exposed to the air. What is the controlled setup in his experiment?
Apple exposed to air
Apples sold in the market
Apple sliced into five equal parts
Apples coated with household products
While cleaning the kitchen, Fellyn accidentally mixed vinegar and baking soda. She heard the fizzing sound and noticed the formation of bubbles. She was amazed and started asking questions about what happened. What scientific attitude was described in the situation?
Critical-mindedness
Curiosity
Resourcefulness
Risk-taking
Which of the following best explains the meaning of the phrase “like dissolves like”?
Solute and solvent must have the same phase.
Solvents can dissolve solutes of similar molar mass.
Nonpolar solvents dissolve in polar and ionic solutes and vice versa.
Polar solvents dissolve polar solutes and nonpolar solvents dissolve nonpolar solutes.
Which statement about elements is correct?
It can be separated into simpler means.
It is made up of the same type of atom.
It is composed of two or more atoms.
It is an example of a homogeneous mixture.
Why does the North Pole experience daytime for almost half a year?
Because of the 23.5° tilt of Earth away from the sun
Because of the 23.5° tilt of Earth toward the sun
Because of the 26° tilt of Earth away from the sun
Because of the 26° tilt of Earth toward the sun
Why are excess amounts of floating water plants such as water lilies, water hyacinths, and kangkong not good for a lake or pond?
The bacteria they harbor release toxins that kill other aquatic plants, reducing the production of oxygen in the lower depths of the lake.
They block off sunlight, reducing the oxygen levels at the lower depths of the lake or pond.
They decompose and just float there, causing the fishes to drown because they do not have access to open air.
They do not taste good and are not good for selling in the markets.
What does a person on Earth see during a penumbral lunar eclipse?
Observers will be thrown into total darkness.
People will see a slight darkening of the full moon.
The antumbra will make the moon look slightly darker.
There is no change.
Among stars, which color is the coolest color?
Red
Orange
Blue
Yellow
When does an annular solar eclipse occur?
If the sun, the full moon, and the new moon almost block the sun
When the moon is too far away to totally cover the sun
When the moon is too near and is totally covered, showing a corona
When the penumbra formed by the moon reaches Earth
Your mother will cook squash with coconut milk for dinner. Unfortunately, fresh coconut milk is not available, which is why she used powdered coconut milk. She used hot water to dissolve the coconut powder easily. What solubility factor is described in this situation?
Nature of solute and solvent
Temperature
Particle size
Stirring
Which of these environments would you not expect to find archaebacteria?
A very salty environment
An area with room temperature
A place with very low temperature
An environment with very high temperature
One morning, you went to the bathroom and stood barefoot on the floor, one foot on the tiled floor and the other was on a wooden floor. Why is it that the tiled floor feels colder than the wooden floor?
The tiled floor emits more thermal energy.
The wooden floor absorbs more thermal energy.
Tile is a good conductor of heat. The heat energy transfers from your foot to the tiled floor.
Wood is a good conductor of heat. The heat energy transfers from your foot to the wooden floor
Which of the following situations shows that work is done?
Pushing a wall
Carrying a box while walking
Pushing a box across the floor
A block moving on a smooth, frictionless surface
Which of the following situations shows that work is NOT done?
Walking
Lifting a box
Pushing a wall
Pushing a table
