Lights
What forms white light?
A)Combination of all the wavelengths of ultraviolet light
B)Combination of all the wavelengths of visible light
C)Absorption of electromagnetic rays
D)Absorption of infrared rays
B)Combination of all the wavelengths of visible light
Which term is used to describe the variety of inheritable traits in a species?
A)Ecosystem diversity
B)Genetic diversity
C)Natural selection
D)Species diversity
B)Genetic diversity
What is the advantage of using the electromagnetic spectrum model?
A)It helps compare frequencies of light.
B)It helps change the wavelengths of light.
C)The color of light waves can be changed using the model.
D)The intensities of light waves can be changed using the model.
A)It helps compare frequencies of light.
Alice did an experiment to find the relationship between the angle at which a ray of light strikes a mirror and the angle at which the mirror reflects the light. She placed a ray box in front of a mirror. She changed the angle at which the light from the ray box struck the mirror and noted the corresponding angle at which the mirror reflected the light.
What is the dependent variable?
Angle at which the mirror reflects the light from the ray box
Which term is used to describe all the habitats around the world?
A)Species diversity
B)Natural selection
C)Genetic diversity
D)Ecosystem diversity
D)Ecosystem diversity
What most likely happens when water vapor cools?
A)It changes into gas.
B)It changes into liquid.
C)Its temperature increases.
D)Its temperature remains constant.
B)It changes into liquid.
Which part of the electromagnetic spectrum can humans see with the naked eye?
A) Infrared light
B) Ultraviolet rays
C) Visible light
D) X-rays
C) Visible light
Fiona did an experiment to find the relationship between the angle at which a ray of light strikes a mirror and the angle at which the mirror reflects the light. She placed a ray box in front of a mirror. She changed the angle at which the light from the ray box struck the mirror and noted the corresponding angle at which the mirror reflected the light.
What is the independent variable in this experiment?
Angle at which the light from the ray box strikes the mirror
It has been reported that the DNA of the elephant shark has barely changed over the last 420 million years. Which statement explains why the elephant shark has not changed over time?
A) Many variations existed in the species.
B) Several mutations took place in the species.
C) Their environment remained fairly constant over time.
D)They were exposed to severe competition for food and a mate.
C) Their environment remained fairly constant over time.
What most likely happens when water loses heat?
A) It changes into ice.
B)It changes into vapor.
C)Its temperature increases.
D)Its temperature remains constant.
A) It changes into ice.
Which of the following waves have the lowest energy?
A) Gamma waves
B) Radio waves
C) Visible light
D) X-rays
B) Radio waves
As light moves from one material into the next, which of the following affects how much the light waves will refract, or bend?
A)Angle at which the ray strikes the medium
B)Color of the material
C)Density of the material
D)Temperature of the light wave
C)Density of the material
What best describes red light?
A)Is a form of infrared light
B)Is a form of ultraviolet light
C)Has the longest wavelength
D)Has the shortest wavelength
C)Has the longest wavelength
The Quiver tree grows in Southern Africa. Which of the following plant adaptations is likely to prevent these trees from dying out due to rising desert temperatures?
A)Releasing a black powder onto their trunk to absorb more heat from sunlight
B)Shifting their growing range towards the equator
C)Ability to store water in leafy structures to prevent excess evaporation
D)Limiting seed dispersal to nearby locations
C)Ability to store water in leafy structures to prevent excess evaporation
A piece of copper at 10 °C is dropped into a glass of water at 35 °C. Which statement is correct?
A) Heat will flow from the copper to the water in the glass until both reach the same temperature.
B) Heat will flow from the water in the glass to the copper until both reach the same temperature.
C)The final temperature of the water in the glass and the copper will be 10 °C.
B)Heat will flow from the water in the glass to the copper until both reach the same temperature.
Which statement is true about the model of the electromagnetic spectrum?
A)It helps change the frequencies of light.
B)It helps compare wavelengths of light.
C)The color of light waves can be changed using the model.
D)The intensities of light waves can be decreased using the model.
B)It helps compare wavelengths of light.
What happens when the density of a medium increases?
A)Bending of light decreases
B)Bending of light increases
C)Temperature of light increases
D)Temperature of light decreases
B)Bending of light increases
What best describes violet light?
A)Is a form of infrared light
B)Is a form of ultraviolet light
C)Has the longest wavelength
D)Has the shortest wavelength
D)Has the shortest wavelength
The coelacanth fish looks very similar to its fossil ancestors from 300 million years ago. Which of the following statements explains why the coelacanth fish is very similar to its ancestor?
A)It was affected by natural selection.
B)Its underwater deep cave habitat did not change.
C)It encountered several predators during its evolution.
D)The fish was exposed to competition for food and a mate.
B)Its underwater deep cave habitat did not change.
A piece of nickel at 25 °C is dropped into a glass of water at 25 °C. Which statement is correct?
A)Heat will flow from the nickel to the water in the glass.
B)Heat will flow from the water in the glass to the nickel.
C)There will be no transfer of heat from the nickel to the water in the glass.
D) The final temperature of water and nickel will be 0 °C.
C)There will be no transfer of heat from the nickel to the water in the glass.
How does the model of the electromagnetic spectrum benefit the study of science?
A)The color of light waves can be changed using the model.
B)It helps create new colors of light in the visible spectrum.
C)It helps compare the applications of electromagnetic waves.
D)The wavelength of light waves can be changed using the model.
C)It helps compare the applications of electromagnetic waves.
Which statement is true about the amount of refraction of light waves as they pass through a material, or medium?
A)Depends on the temperature of the light wave
B)Decreases with an increase in density of medium
C)Increases with an increase in density of medium
D)Depends on the angle at which the wave strikes the medium
C)Increases with an increase in density of medium